When I try to open Excel (all the other Microsoft programs open fine), I get
a Windows Installer box titled "Microsoft Office XP Professional with
FrontPage" that says, "Preparing to install ..." Then a box pops up that
says, "Please wait while Windows configures Microsoft Office XP Professional
with FrontPage". And finally a box appears saying, "The feature you are
trying to use is on a network resource that is unavailable", and below that,
"Click OK to try again, or enter an alternate path to a folder containing the
installation package 'PROPLUS.MSI' in the box below." I am given the options
OK, Cancel, and Browse. When I click Cancel, I get "Error 1706. Setup cannot
find the required files. Check your connection to the network or CD-ROM
drive. ..."

It has been a few months since I have used Excel, but I never had any
problem with it before. I don't know if it has been corrupted through the
regular Windows updates that I download and install every time I am prompted.
Could someone please help me fix this? I have no installation disks, as
this software came on the computer when it was bought new (many years ago),
but it is a legal, registered copy.

Thanks in advance for any help you can offer.