Not sure where you got the impression an upgrade is required. Office 97
works just fine on XP. There are some service releases (SR-2 I recall
was the last, but I might be wrong on that recollection) issued in the
latter part of the last century for this software which you should try
to find and use, if possible. I think there are some very minor issues
with Access which are documented, as I recall, in Microsoft's Knowledge
Base. Read if this aspect is important to you.
Hope this is useful to you. Let us know.
rms