[psiphi]

Hmm, I'm starting to run out of ideas... Lets try this:

With the phone plugged into the computer, Rught click on My Computer, Click on Manage, select Device Manager from the Left Pane, scroll to the bottom of the Right Pane...

Do you have something called Windows CE USB Devices in the list? If you do, do youi have something called Microsoft USB Sync inside of it (when you expand it?) Does it show an error condition when you double click on it?

You might want to check the files under Event Viewer (in the Left Pane) for the time you plug in the phone to see if any errors are coming up in the logs...