Exhibit 10.20


        AMENDMENT NO. 2 TO SERIES E PREFERRED STOCK PURCHASE AGREEMENT
        -------------------------------------------------------------- 


  This Amendment No. 2 (the "Amendment") to that certain Series E Preferred
Stock Purchase Agreement (the "Original Agreement") dated as of February 22,
1996 by and among Production Group International, Inc., a Virginia corporation
(the "Company"), and the investors listed on Schedule A thereto, each of which
is herein referred to as a "Prior Series E Investor" and collectively as the
"Prior Series E Investors," as amended by that certain Amendment No. 1 to the
Original Agreement dated as of June 19, 1996, is made as of September 26, 1996
(the "Effective Date") by and among the Company and the Prior Series E Investors
that have executed this Amendment (collectively, the "Amending Investors").
Capitalized terms not otherwise defined in this Amendment shall have the meaning
set forth in the Original Agreement.

  WHEREAS, the Amending Investors hold a majority of the Common Stock issued or
issuable upon conversion of the Series E Preferred Stock; and

  WHEREAS, the Company and the Amending Investors desire to amend the Original
Agreement.

  THE PARTIES HEREBY AGREE AS FOLLOWS:

  1. Section 1.5, which currently reads as follows:

            "1.5 Additional Investors and Subscription Amounts.  The Company
                 ---------------------------------------------              
     may, until June 30, 1996, either add new parties to this Agreement, or
     agree with an Investor to increase the number of shares of Series E
     Preferred Stock set forth opposite such Investor's name, provided, that (a)
     in the event a new party is added to this Agreement, such new party
     executes signature pages to this Agreement and the other agreements
     referenced herein, and is subject to the terms and conditions of this
     Agreement and the other agreements referenced herein and shall be deemed an
     "Investor" for purposes of this Agreement; (b) in the event the number of
     shares of Series E Preferred Stock for an Investor is increased, the
     Company and such Investor both execute a written document documenting such
     increase, (c) in either event, Schedule A is amended accordingly; (c) in
     either event, the Company promptly notifies each Investor of such new party
     or parties or such increase for an existing Investor and concurrently
     distributes an amended Schedule A; and (d) the aggregate amount of shares
     of Series E Preferred Stock set forth on Schedule A and available to be
     sold pursuant to this Agreement does not exceed 1,796,407 shares."

shall be amended in its entirety to read as follows:

            "1.5 Additional Investors and Subscription Amounts.  The Company
                 ---------------------------------------------              
     may, until December 31, 1996, either add new parties to this Agreement, or
     agree 

 
     with an Investor to increase the number of shares of Series E Preferred
     Stock set forth opposite such Investor's name, provided, that (a) in the
     event a new party is added to this Agreement, such new party executes
     signature pages to this Agreement and the other agreements referenced
     herein, and is subject to the terms and conditions of this Agreement and
     the other agreements referenced herein and shall be deemed an "Investor"
     for purposes of this Agreement; (b) in the event the number of shares of
     Series E Preferred Stock for an Investor is increased, the Company and such
     Investor both execute a written document documenting such increase, (c) in
     either event, Schedule A is amended accordingly; (c) in either event, the
     Company promptly notifies each Investor of such new party or parties or
     such increase for an existing Investor and concurrently distributes an
     amended Schedule A; and (d) the aggregate amount of shares of Series E
     Preferred Stock set forth on Schedule A and available to be sold pursuant
     to this Agreement does not exceed 1,796,407 shares."

     2.   Schedule A to the Original Agreement is hereby amended in its
entirety as of the date hereof to read as set forth in Schedule A attached
hereto.

     3.   Except as specifically provided herein, the Original Agreement shall
remain in full force and effect.



[REST OF PAGE LEFT INTENTIONALLY BLANK]

                                      -2-

 
     IN WITNESS WHEREOF, the parties have executed this Amendment No. 1 as of
the Effective Date.

                                    PRODUCTION GROUP INTERNATIONAL, INC.



                                    By:
                                       ---------------------------------
                                         Mark N. Sirangelo, President

                                    Address:  One Courthouse Metro
                                              Suite 200
                                              2200 Wilson Boulevard
                                              Arlington, Virginia 22201


                      SIGNATURE PAGE TO AMENDMENT NO. 2 TO
                  SERIES E PREFERRED STOCK PURCHASE AGREEMENT


 
                                    SIERRA VENTURES IV, a
                                    California Limited Partnership

                                    By its General Partner,

                                    SV ASSOCIATES IV, L.P., a California Limited
                                    Partnership


                                    By:
                                       ----------------------------------
                                        Peter C. Wendell
                                        General Partner

                          Address:  3000 Sand Hill Road, Bldg 4, Suite 210
                                    Menlo Park, California  94025


                                    SIERRA VENTURES IV INTERNATIONAL, a 
                                    California Limited Partnership

                                    By its General Partner,

                                    SV ASSOCIATES IV, L.P., a California Limited
                                    Partnership

                                    By:
                                       ----------------------------------
                                        Peter C. Wendell
                                        General Partner

                          Address:  3000 Sand Hill Road, Bldg 4, Suite 210
                                    Menlo Park, California  94025


                      SIGNATURE PAGE TO AMENDMENT NO. 2 TO
                  SERIES E PREFERRED STOCK PURCHASE AGREEMENT


 
                                    MELLON BANK, N.A., solely in its capacity as
                                    Trustee for the First Plaza Group Trust (as
                                    directed by General Motors Investment
                                    Management Corporation), and not in its
                                    individual capacity


                                    By:                      
                                       ----------------------------------
                                    Name:  
                                         --------------------------------
                                    Title:  
                                          -------------------------------

                          Address:  One Mellon Bank Center
                                    Pittsburgh, PA  15258-0001



                      SIGNATURE PAGE TO AMENDMENT NO. 2 TO
                  SERIES E PREFERRED STOCK PURCHASE AGREEMENT


 
                                    WLD/LAMONT PARTNERS


                                    By:
                                        -------------------------------
                                        Douglas S. Luke
                                        General Partner

                          Address:  One E. Broward Blvd.
                                    Suite 1101
                                    Ft. Lauderdale, FL  33301



                      SIGNATURE PAGE TO AMENDMENT NO. 2 TO
                  SERIES E PREFERRED STOCK PURCHASE AGREEMENT


 
                                  SCHEDULE A

                             SCHEDULE OF INVESTORS


                           Series E Preferred Stock
                           ------------------------





                                      Number of Shares
                                        of Series E
  Name and Address                    Preferred Stock
  ----------------                    ---------------
                                    
  Mellon Bank, N.A., as Trustee            479,042
  for First Plaza Group Trust       
                                    
  Sierra Ventures IV, L.P.                 201,511
                                    
  Sierra Ventures IV International           8,069
                                    
  Merifin Capital N.V.                     119,760
                                    
  Orchid & Co.                              59,880
                                    
  Trident Capital                           49,991
    Partners Fund-I, L.P.          
                                    
  Trident Capital                            9,889
    Partners Fund-I, C.V.           
                                    
  Michael P. Galvin 1994 Trust              59,880
                                    
  Mercury Partners, LLC                     59,880
                                    
  Frederic C. Hamilton                      59,880
                                    
  WLD/Lamont Partners                      633,474
                                    
  ABS Employees' Venture Fund, L.P.         55,151
                                    
  TOTAL                                  1,796,407

 

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