The confusion Windows' Vista team is about to cause by offering up 8 different platters might be a little much. Here's the rundown for the rest of you:

Windows Starter 2007 - Vista without Aero, probably meant for developing nations.

Windows Vista Home Basic - Basic Windows Vista for your single PC fam, doesn't sound like much going on here. Analagous to XP Home.

Windows Vista Home Basic N - European version of the same, but without Media Player (because of antitrust rulings against MS in the EU).

Windows Vista Home Premium - It's got Media Center functionality, Cable Card support, the whole home-media shebang.

Windows Vista Business - Think of it as XP Pro, but Vista.

Windows Vista Business N - Think of it as XP Pro, but Vista, but Euro.

Windows Vista Enterprise - Business version of Vista with numerous enterprise features, like Virtual PC, volume encryption, etc.

Windows Vista Ultimate - This one does all of the above (and more); what else do you need to know? It's ultimate Windows..