Office XP SP3 interfering w/ Excel
 

I tried installing Office XP service pack 3, but, like many other people, I
don't have the Microsoft Office CD to insert when prompted. I figured I
wouldn't install this update and ignore it. However, I just tried to open
Excel to work on something and I received a message that said Windows in
trying to update Microsoft Office with Front Page and I need to insert the CD
(which I don't have). It also says I could browse for the file 'PROPLUS.MSI'
(which I can't find on my computer). I can't open Excel, but all the other
Microsoft Office Applications work just fine. Any advice on where to find
PROPLUS.MSI or on how to get Excel work? I'd really appreciate it!!