Saw this at LangaList,and though I dont run XP,I though it might interest someone:
1) 100% Legit, Partial Workaround For
Product Activation
Don Lett was the first to send in this info. It's
not a crack or a malicious way to foil Windows
Product Activation (WPA), but rather is a way that
legitimate users of XP software can avoid having to
reactivate the software after a full install:
The trick is to copy and re-use the
c:\windows\system32\wpa.dbl file. It's small--- mine
is just 13K long--- so it will easily fit on a
floppy. Or, you can copy it to another safe location
on your hard drive. Once that's done, go about your
reinstallation task normally.
After you've reinstalled XP, either boot to a DOS
floppy or start in XP's Safe Mode/Command Prompt
(i.e. hit the F8 key when your system "beeps" during
the boot process). Then copy your original wpa.dbl
from its safe location back into the
c:\windows\system32 folder, and then reboot.
Because nothing on your system has changed--- it's
the same BIOS, CPU, RAM, etc., and because you're
installing the same copy of XP that was previously
installed, the "old" WPA key should be accepted as
valid, saving you the hassle of re-Activating the
software.
Note that this won't work if you try moving the file
to a different machine, so it's not a way to pirate
software. But if you want to simply reinstall a
valid and already-activated copy of XP onto the same
hardware on which it was originally installed, this
may save you from having to re-Activate the new
installation.
Here's
the site
Hope you find it useful
lynch
hardware
prices 
