I know that Windows XP stores its activation information in a file
called "wpa.dbl".  If this file is backed up, the OS can be
reinstalled without reactivation by restoring that file (provided the
hardware has not changed too drastically).

I have reason to believe that MS Office 2003 uses a similar activation
file (this is implied by a feature of a software product called
"OutSource-XP").

My question is, where is this file kept?

gw-ga,

From [ http://www.dogcomputerclub.homestead.com/Menu_NEW_STUFF_WPA1.html ]:
 
"This is how legitimate users of Windows XP can avoid reactivation
with Microsoft after a full install on the same computer.

Copy and re-use the  c:\windows\system32\wpa.dbl  file.

It is a small file that will easily fit on a floppy. 
Or, copy it to safe location on your hard drive. "

Google search strategy:

Keywords, ""wpa.dbl" location"

Hope this helps,

omniscientbeing-ga

I guess I could've been more clear when I posted the question.

I know where the Windows XP activation file is.

What I want to know is where the MS Office 2003 activation file is.