As you know, doing a clean install of Windows XP has many positives and a few negatives. One of the biggest negatives is Re-activating your Windows XP installation after a clean install, but, there is a way around this problem. Before you do a clean install of XP, go to the following directory on your main hard disk. C:\WINDOWS\system32 (This will directory may vary on some comuters) and look for a file called wpa.dbl and copy it onto a USB, floppy disk or any other media device. Then do a clean install of XP. Once you have finished installing XP it will ask you to activate Windows, ignore this. Then open up the USB or floppy disk (whatever you copied wpa.dbl onto) and copy wpa.dbl to C:\WINDOWS\system32 (As I mentioned before, this directory may be some on some computers). Thats all! Your clean install of Windows XP has been activated!
This method will only work if the clean install of Windows XP was installed by the same installation CD as the previous Windows XP installation which is the one that the wpa.dbl file was copied from, therefore meaning it isn't a method that is illegal.
Hope this one helps!
Edited by Grinler, 02 June 2010 - 12:01 PM.