Where can I get one for very temp use, hypothetically? Honestly, I genuinely have mislaid my XPSP2 cover, so have no fucking idea what the serial is. I could get in touch with MS as it was supplied directly by them, and it was registered in my name. But the Dept I have to speak to is in closed until Monday. I really need this ASAP to get this particular machine up and running. Any ideas where might be able to help?