Microsoft has made it difficult for users to “clean install” Windows Vista (that is, install the operating system on a computer that doesn’t have a previous copy of Windows) if you’ve bought an upgrade version of the operating system.
Doing this is difficult, but not impossible, although it is a major hassle. Here’s how:
One concern for Windows XP users is if their favorite software applications will run once they upgrade to Vista. Luckily, Windows Vista uses a feature called Compatib...