In case anyone cares, you can't upgrade from Vista Home Premium to Windows 7 Professional. Oh the box says all versions of Vista can be upgraded, but that is not true at all. It will make you re-install all programs. It forces a clean install. So if this was something you were planning on doing, DON'T waste $200 like I just did.
That's what I suspected. It's too bad because I really don't feel like going through the hassle of installing my apps again. I'll just wait until I buy a new PC to experience W7.