Solution to demand to install at ref desk

You know when you're surfing at the ref desk, and suddenly your browser is demanding that you install something from a Microsoft Office disk?: "The feature you are trying to use is on a network resource that is unavailable." You try to cancel the install and you get an error message and get caught in an annoying loop for a few seconds?
Ron and Jeff have given us a solution. Paste this in the dialog box: p:\apps\microsoft\office\2000SP3\disk1
Jeff says we may have to do this again periodically.