Exhibit A

                             Joint Filing Agreement

AGREEMENT dated as of May 20, 2004, by and among D. Emerald Investments Ltd. and
Doron Ofer (collectively, the "Parties").

Each of the Parties hereto  represents to the other Party that it is eligible to
use Schedule 13D to report its  beneficial  interest in shares of common  stock,
par value $.001 per share,  of GSV, Inc.  ("Schedule  13D") and it will file the
Schedule 13D on behalf of itself.

Each of the  Parties  agrees  to be  responsible  for the  timely  filing of the
Schedule 13D and any and all  amendments  thereto and for the  completeness  and
accuracy of the information concerning itself contained in the Schedule 13D, and
the other  Parties  to the  extent it knows or has  reason to  believe  that any
information about the other Parties is inaccurate.

                                        D. EMERALD INVESTMENTS LTD.


                                        By:/s/ Roy Harel
                                           -------------
                                           Name:  Roy Harel
                                           Title: Manager


                                        /s/Doron Ofer
                                        -------------
                                        Doron Ofer