Hi Lori,If you are running Windows XP then you are having a legitimate authentication issue within the installation. So it is good you did not continue as you would have other issues down the road.
If you are running SQL Server 2005 Express, then more than likely you are running a named instance (this is the default). Have you tried to authenticate using the SQLEXPRESS named instance?
localhost\SQLEXPRESS
Next, is the SQL Server service running? Last, if you open a command prompt can you telnet to the SQL Server instance on port 1433?
- Click Start -> Run
- Type cmd
- Press Enter
- Type telnet X.X.X.X 1433
If you get a black screen then you are good, otherwise SQL Server is not listening on port 1433 and may not even be running.
Try this and let me know. More than likely you are probably just missing the SQLEXPRESS named instance portion of the server name.