This article explains that Microsoft SQL Server 2000 is not supported on computers that run the following versions of Microsoft Windows operating system
Windows Vista (all editions)
Windows Server 2008 (all editions)
Windows Server 2008 R2 (all editions)
Windows 7 (all editions)
SQL Server 2000 is not tested on computers that run the Windows operating systems that are discussed in the Summary section. Therefore, SQL Server 2000 is not supported on these systems and Microsoft does not offer any technical support for these installations.
For a list of Operating Systems that are supported various editions of SQL Server 2000 refer to the following link on MSDN