"Server does not exist or access is denied"

[CAN'T SEE THE SERVER FROM VS SERVER EXPL]

Hi,

I am trying to connect a web service to an SQL Server 2000 database. SQL
Server is installed and started and the database appears on the Enterprise
MAnager window but it does not appear in the Server Explorer in VS2003.NET
IDE window.It gives the error "Server does not exist or access is denied".

I have re-installed both SQL server and VS but have not being able to solve
this problem.

Can someone help me out ? A prompt reply will be highly appreciated.

Regards

Kapila