I have a HP box not 3 metres from me with an XP Professional install key on a fricking sticker on the case. I can't find the original media. The code doesn't work with any other disk I can find. I need Windows to play games (HL2, not available on my usual Macs).
What do I do? I "pirate" Windows XP, of course. Now I'm running a pirated Windows XP Pro on a machine with a Windows XP Pro key on a sticker on the case. It's surreal. The lack of respect it engenders for Microsoft and their WGA crap is palpable.