hi, i'm thinking about installing XP in VMware server and i was wondering which product key i should use? - i have two XP licences, but only one XP install disc. i don't have XP installed at all on any PC! the disc is the one from MS like this - (so, i think that can be used with any computer ) http://xs114.xs.to/xs114/07162/xp-cd.jpg it came with an old PC, but i want to install it on my newer, faster computer which didn't come with any MS cds. so, which product key should i use? both keys are on the side of the computer cases, and again they aren't being used. should i use the key from the computer i'm installing it on - the newer, faster PC, that the cd didn't come with? or the key from the old PC that came with the cd, but isn't the computer with VMware Server on?