Reinstall Windows XP Without Repeating Online Activation

This has probably happened to most of us already. We have XP installed already and when we reinstall it, we are asked to go online and activate it again. You can avoid doing that by backing up a very small file that has the activation information. Before you do this, keep in mind that your hardware should be the same as before when you activated in order for this to definitely work. Go to C:\Windows\System32 and look for wpa.dbl. Copy that file to a floppy. After you finished reinstalling XP, just rename the current wpa.dbl file in C:\Windows\System32 to something like wpa.old