> I want to buy an EEE PC with Windows.
Does it come with a licenced copy of windows on CD?
Does it have the authentication sticker, containing the 25-character code?
If so, you're good. Any XP installation CD will do, all you need is the authentication code for that machine.
You're allowed a certain number of "upgrades" to your machine before MS decides that the original old machine and the current new machine are too different.