My computer was purchased a couple of years ago second-hand with Office XP installed, and without the system CDs. A couple of months ago something happened while I was on the Internet that caused the computer to want to install Office EVERY TIME I TRY TO OPEN AN OFFICE FILE. When I click "open office document" from the Start menu, I get a dialog box that says "Preparing to install." If I click "cancel" quickly enough, it launches the application just fine. If I don't click "cancel," I get another dialog box that says "Please wait while Windows configures Microsoft XP Professional." Again, if I click "cancel" quickly enough, the application launches. If I don't click "cancel," I get a third dialog box that says "The feature use are trying to use is on a CD Rom that is not available. Insert 'Microsoft Office XP Professional' disk and click OK." Again, if I click cancel, it's okay. A final dialog box suggests troubleshooting by going to C:\Program Files\Microsoft Office\Office 10\1033\SETUP.HLP - once again, this suggests using the CD-ROM! I've been going through this elaborate dance for months and I'm beginning to get tired of it! Any suggestions welcome!