When you have installed a legal copy of XP you need to activate it. You type in name adress blah blah blah... But does anyone know what the file is called, so you can for next time installing xp skip the activation part since you have the file. I've read this somewhere but I can't remember the name?

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The files are wpa.dbl and wpa.bak and they are located in the windows\system32 folder.