The link to Microsoft Remote Server Administration Tools for Windows Vista SP1 is for the 32-bit version of Vista. However, if you are one of the few people running Vista's 64-bit version, just scroll down to the bottom to find the link for that version.

This tool is pretty narrow. It lets you remotely administer Windows Server 2008 (not 2003 or 2003 R2) from a Windows Vista SP1 PC (not Windows XP or Vista pre-SP1). But, if you've got Server 2008 running and have updated Vista to SP1, take a look at this tool. You might find it very useful.