Whenever I try to open a MS application (Explorer, Word, etc.) I get a Windows Installer window which tries to find a file called PRORET.MSI. I can cancel the installation, and it will eventually open the app and work ok. I saw a similar question for Win2000, but I didn't understand what to do here. I've tried reinstalling WIN without success., but I'm not sure what options I should choose/force when doing the installation.
I'm in WindowsXP Pro, Version 2002, Service Pack 1 if that helps.