Hmm..."never buy when tired" is something to surely remember, yes...
Other than that...I dont see any real reasons why not to install this version...who cares if it allows only 1 or 2 installs...as long as you dont plan to upgrade to Vista later...you (or the buddy that you build this computer for) shouldnt have any other "problems" with it. I mean...if i was you...and wouldnt have other version lying somewhere to install...i would definitely install this one. You (or he) can always install REAL XP Pro at any later time if needed. Right?
You (or he) can always install REAL XP Pro at any later time if needed. Right? 
