Error Connecting to SQL 2000 from 2005 SSMS

I can connect to all but one of my SQL 2000 SP 4 servers with SQL 2005 SP2 SSMS on my workstation. I get the following error for the one:

An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53)

I can connect to this server with the SQL 2000 Enterprise Manager from the same workstation I'm running SQL 2005 SSMS. I've also verified that tcp and named pipes are set up on the 2000 server. Can also telnet to the box with the default port #.

I'd appreciate any help you could give..

Thanks,

Dan

check the sql server 2005 is enabled for remote connection. check for firewall

http://blogs.msdn.com/sql_protocols/archive/2006/09/30/SQL-Server-2005-Remote-Connectivity-Issue-TroubleShooting.aspx

Madhu