I had a virus (w32.pifi) and used my XP Pro cd (burned copy) to do a non-destructive reload (had taskmon.exe error and userinit error on startup), anyways it reloaded and got to the enter CD Key (wasnt thinking it would need the Key again on a reload) and I realised I lost the paper I wrote the Key on (wasnt smart enough to write it on the CD is there anything I can do now to reverse the reload or get a key without buying a new one from Microsoft?