This has to be an easy question.

WORK2 - My workstation (xp pro)
WORK3 - Location of SQL Express 2005


WORK3 is a XPPro, both WORK2 and 3 have full admin rights to their machines and the network, I am using SQL Authentication (sa, password)
I have used the SQL Server Config app to enable the 4 Protocols, then restarted service. I can connect locally to my database via "SQL Server Management Studio Express", and through my VB application. I have check "allow remote connections" in the database properties.
I do not know what i am missing? any thoughts?

Thanks in Advance