since windows has released that thing, WGA, i haven't been able to update to Service Pack 2, which i should have done a long time ago but now i regret it. seems as though a pirated copy of XP was installed on my computer when i bought it. If i was to buy the Genuine one and installed it, what if i need to reformat my computer again, will that Genuine XP disk still allow me to get the updates that i need? will Microsoft detect my version of windows to be genuine after i reformat? so asking the same question, does it allow me to install Windows more than once on a single computer but also seeing it as genuine?