Hi,
You probably need to give a bit more info to get an answer.
Are you look for an ADO connection string?
Are you in SQL Query Analyser and are trying to connect?
Are you in Enterprise manager trying to register the server?
Or are you trying to create a "Data Source" or UDL (Universal Data Locator (?)) file
Or are you connected to a server and you are trying to connect to another so that you can query using the remote server's tables - Look up Linked Server on SQL Books Online.
Hope this "gets the ball rolling"
Gary