My CD ROM does not work on my computer and I'm probably not going to get it
fixed (will be getting a new computer later). Office Service Pack 3
automatically started and it asked for the Microsoft CD, which won't work on
the computer. I had to cancel it.

Now when I try to run Excel it wants to do an install and it asks for the
CD. I can't get past this to open Excel.

Is there a way to undo what this Service Pack started and go back to the way
it was. I would rather have Excel without the Service Pack than not have
Excel at all.