If you're using NT Workstation or Server then SQL Workstation, and the
standard and developer editions of SQL Server 6.5 will work. If you don't
have a network interface card in your machine you'll need to install the
Microsoft loopback adapter (in the Network app in Control Panel) which is
software to emulate a network adapter.
SQL Server 7 will run on NT Workstation, NT Server, Win 95, or Win 98.
MCSD, SQL Server MVP