------------------------------
                                                           OMB APPROVAL
                                                  ------------------------------
                                                  OMB Number           3235-0104
                                                  Expires:            12-31-2001
                                                  Estimated average burden
                                                  hours per response ....... 0.5
                                                  ------------------------------

                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                     FORM 3

            INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

    Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
       Section 17(a) of the Public Utility Holding Company Act of 1935 or
               Section 30(f) of the Investment Company Act of 1940

________________________________________________________________________________
1.   Name and Address of Reporting Person*

     Lambka                             Dennis
________________________________________________________________________________
   (Last)                            (First)              (Middle)

     2851 High Meadow Circle
________________________________________________________________________________
                                    (Street)

     Auburn Hills                   Michigan                48326
________________________________________________________________________________
   (City)                            (State)                (Zip)

________________________________________________________________________________
2.   Date of Event Requiring Statement (Month/Day/Year)

     6/5/01
________________________________________________________________________________
3.   IRS Identification Number of Reporting Person, if an Entity (Voluntary)


________________________________________________________________________________
4.   Issuer Name AND Ticker or Trading Symbol

     IVG Corp. (IVGG)
________________________________________________________________________________
5.   Relationship of Reporting Person(s) to Issuer
     (Check all applicable)

     [X]  Director                             [X]  10% Owner
     [_]  Officer (give title below)           [_]  Other (specify below)


________________________________________________________________________________
6.   If Amendment, Date of Original (Month/Day/Year)


________________________________________________________________________________
7.   Individual or Joint/Group Filing  (Check Applicable Line)

     [X]  Form Filed by One Reporting Person

     [_]  Form Filed by More than One Reporting Person

================================================================================
             Table I -- Non-Derivative Securities Beneficially Owned
================================================================================


                                                          3. Ownership Form:
                               2. Amount of Securities       Direct (D) or
1. Title of Security              Beneficially Owned         Indirect (I)       4. Nature of Indirect Beneficial Ownership
   (Instr. 4)                     (Instr. 4)                 (Instr. 5)            (Instr. 4)
------------------------------------------------------------------------------------------------------------------------------------
                                                                          
Common Stock                      6,254,631(1)                D
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

====================================================================================================================================



Reminder: Report on a separate line for each class of securities beneficially
   owned directly or indirectly.

*  If the form is filed by more than one reporting person, see Instruction
   5(b)(v).

POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED
IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY
VALID OMB CONTROL NUMBER.

                                                                          (Over)
                                                                 SEC 1473 (3-99)





FORM 3 (continued)

              TABLE II -- DERIVATIVE SECURITIES BENEFICIALLY OWNED
         (e.g., puts, calls, warrants, options, convertible securities)

================================================================================


                                                                                                        5. Owner-
                                                    3. Title and Amount of Securities                      ship
                                                       Underlying Derivative Security                      Form of
                         2. Date Exercisable           (Instr. 4)                                          Derivative
                            and Expiration Date     ---------------------------------    4. Conver-        Security:
                            (Month/Day/Year)                               Amount           sion or        Direct      6. Nature of
                         ----------------------                            or               Exercise       (D) or         Indirect
                         Date       Expira-                                Number           Price of       Indirect       Beneficial
1. Title of Derivative   Exer-      tion                                   of               Derivative     (I)            Ownership
   Security (Instr. 4)   cisable    Date            Title                  Shares           Security       (Instr. 5)     (Instr. 5)
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                  

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------

====================================================================================================================================

Explanation of Responses:

(1)  Includes 5,000,000 shares held in escrow to secure indemnification
     obligations under the Amended and Restated Asset Purchase Agreement and
     Plan of Merger, dated March 31, 2001, among SES Acquisition 2001, Inc.,
     Cheyenne Management Company, SES-Corp., Inc., Dennis Lambka, Ronald Bray
     and IVG Corp.



/s/ Dennis Lambka                                             6/15/01
---------------------------------------------            -----------------------
      **Signature of Reporting Person                             Date

**   Intentional misstatements or omissions of facts constitute Federal Criminal
     Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note:  File three copies of this Form, one of which must be manually signed.
       If space provided is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained
in this form are not required to respond unless the form displays a currently
valid OMB control number.


                                                                          Page 2