[citation][nom]viceroy69[/nom]I wonder if you can upgrade from a pirated copy of XP?[/citation]
Hmmmm... while not necessarily something I'd exactly condone, I once advised a friend of mine to buy the "upgrade" version of XP home for $99 and then when the installation asked for the Win 98SE CD, we popped in a pirate disc and it worked!
Oh yeah, while it's not quite as shady, I've also done clean installs of Vista with an upgrade disc, using the upgrade key, and called MS when I ran into troubles with my activation. They let it slide.
Like I said, I don't condone this but it works!