i'VE GOT A THINKCENTRE 8199 desktop WITh a blank hard drive and no recovery disks. It has the win xp sticker on the side. Question is, if i can't get the exact recovery disk for this machine, will recovery disks for other thinkcentre machines of similar vintage likely work? Please answer only if you have some experience with this issue - it its only one or two machines, i'd like to hear about that. thanks, Lewis.