I have had this problem too and even with the disk, I have not been able to
resolve the update issue. I filed a complaint with Microsoft and people
emailed me but have been unable to help as well. I tell you, Linux is
looking better and better every Day. All I want is an automated update or
fix for this problem but the onus is on me to solve their problem. Thanks
alot microsoft for nothing.

"BGG" wrote:

> I tried installing Office XP Service Pack 3 and was prompted for a CD which I
> believe I received when I bought my computer but have not needed it in over
> five years and as such it is most likely lost. I tried to install the full
> version as a workaround but this did not work – I was still prompted for the
> CD. To complicate matters, I now cannot use Excel – when I try, I am
> prompted for a CD. Please advise. Rgds, BGG