problem with renaming SQL server

I am experiencing a big problem with my prod server.I renamed my production server as my test sever (abc) and the test server to (xyz) in sql 2000.

Now, when I connect from my test server to my prod server, it does not seem to see the new server even I put the new server name. It still sees the databases what is in the test server, not the new server databases.

How can I resolve this?

Please help. Thank you all.

Run 'select @@servername' on both servers to see what you get.

I get correct names in both servers..

Which netlib do you use to connect to sql server? Any connection string involved? Did you check DNS and/or Wins for ip address mappings?