[MysticLlama]

If you don't have any other users set up and it was a normal install, your user account is by default an admin.

You can try it out easily, right click something like command prompt and click run as administrator. You'll either get a button if you're an admin, or a password box if you're not.

Even running as admin doesn't work the way it did in XP and earlier though, as much as people hated the UAC popup boxes in Vista (they are handled much more gracefully in 7), if you're paying attention, it keeps apps from screwing with things they shouldn't.

So if you're logged in as an admin, everything you run doesn't run with those rights unless you tell it to. Older stuff (MS stuff, Office 2000 etc. included) can have trouble with that.