Are you using SQL Server 2000 or another version of SQL Server? If you are using another version, you would need to download and update your JDBC libraries. This page might help: http://msdn.microsoft.com/en-US/data/ff928484
Are you trying to connect to Microsoft SQL Server 2000 or MySql?
From the exception message you posted, you are using a Microsoft SQL Server 2000 driver. I would be surprised if the same driver will work with MySql.
If you are trying to connection to SQL Server, which version of SQL Server are you trying to connect to?
If you are trying to connect to SQL Server 2005, I recommend that you try the Microsoft SQL Server 2005 JDBC driver v1.2 that is available at http://msdn.microsoft.com/data/jdbc