I have a user who just installed the Office Connector from inside SF (in the Desktop Integration section of Personal Setup), and it appears to have installed a version 4.0 of the toolkit.

He's getting the "Can't find project or library" error that others have reported getting as a result of a mismatch between Version 2.0 of the toolkit and Version 6.16 of the Excel Connector.

Has there been an updated version of the Excel Connector that will work with Version 4.0 of the toolkit? If not, how do I downgrade him back to Version 3.0, since the only version that will download from SF setup is version 4.0?  

This is not the most technical of users, and I'm supporting him from 200 miles away, so I can't just go to his computer and do it for him. So asking him to go to the Developer Toolkit type sites and figure out what to do is asking for disaster. Please help!