SQL Server 2000 connection problem

I've been tasked with installing an old program on a client's computer that connects to a SQL Server 2000 database. The connection string is hard-coded in the program as follows:
Provider=SQLOLEDB.1;User ID=sa;Password=vbs;Initial Catalog=Boxlabeler;Data Source=localhost
I've tried this connection string in a udl file, but when I try to test the connection, I get the error,
Test connection failed because of an error in initializing provider. [DBNETLIB][ConnectionOpen (Connect()).] SQL Server does not exist or access denied.
When the server name in the udl file is changed from "localhost" to the name of the PC, it is able to connect. I would rather make this work without changing the connection string or upgrading the SQL instance, as I'm not sure how the end-user is connecting to it remotely. What do I have to do to make it work with the server name as "localhost"?
Who is Participating?
Guy Hengel [angelIII / a3]Billing EngineerCommented:
you could try to use instead of localhost....
scprogsAuthor Commented:
Thanks, Seaton. Those links were helpful. I had seen mention before of a network utility for SQL Server 2000, but I had a hard time finding it. It's called SVRNETCN.exe and can be found in C:\Program Files\Microsoft SQL Server\80\Tools\Binn. There, I enabled Named Pipes and TCP/IP and that took care of it.
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