I have had a question posted in a sticky thread [http://forums.mydigitallife.net/thr...e-ISO)/page8 (the last post)] for several days that has not been answered. Yen said that it would be OK to re-post it here in hopes of getting an answer. The question is: Just out of curiosity, what would all the others be used for, or rather, how would I know which one to use where? Also, here I go assuming again, that to install this (the Dell ISO) he will not need a serial number and will be able to update with no problems? I am referring to all the ISOs of Win XP I got when I followed Lateshift's instructions in post 1 of the sticky. In addition, I'd like to ask a related question. He (brother-in-law) has original XP Pro with no service packs installed now (it's a long story). Dell helped him install the drivers he needed. Is there a way to salvage these drivers (just drivers-no programs) when we install the new XP Pro with SP 3, or will he have to install them again?