I read a number of articles that mentioned SQL Server 2000 will not install and/or is not supported on Vista. I just wanted to let you know that it WILL install. The only major caveat that I ran into was in enterprise manager when trying to connect to the 'local' instance. I had to dump that connection and connect to the actual named install of the sql server (which was my server name).
There is also an issue with SQL Server starting properly when Vista loads up. The MSSQLSERVER service was set to start up "Automatic" but in fact this doesn't work. If you change the startup type to "Automatic (Delayed Start)" things will work as expected.