What OS are you using?
To clarify: Your server is running SQL Server 2008 R2 and VS 2005? You are tying to connect from your server to the client PC, or the other way around?
SQL Server 2008 and 2008 R2 only require that TCP/IP protocol be enabled for remote access to be allowed.
You might also check, depending on the OS, if you have a firewall blocking the port either on your network or the OS. Are you connecting to a default instance or a named instance?
To clarify: Your server is running SQL Server 2008 R2 and VS 2005? You are tying to connect from your server to the client PC, or the other way around?
SQL Server 2008 and 2008 R2 only require that TCP/IP protocol be enabled for remote access to be allowed.
You might also check, depending on the OS, if you have a firewall blocking the port either on your network or the OS. Are you connecting to a default instance or a named instance?