When a particular user of mine tries to connect to my SQL server, he gets the following errors:

53: ConnectionOpen(CreateFile())
connection failed.
and
6: specified sql server not found.

The strange thing is that the errors only occur from the users machine, if he logs in as himself on someone elses machine, it works fine.

Does anyone know anything about the errors, especially in regards to what the createfile() is trying to do, or does anyone know of a site where I can look up Sql server errors and their descriptions?

TIA