I wrote a quick app. It just gives you a window that says "Camera is broken".
There's also a link in the zip file...
1. Unzip the zip.
2. Put Mbox.exe in \My Documents
3. Move Camera from \Windows\Start Menu\Programs to \My Documents
4. Put the new Camera included in the zip into \Windows\Start Menu\Programs
Your button assignment shouldn't have to be changed because the link has changed, and you can still get to the real camera by clicking the link you moved to My Documents
I made the icon a little red X so he really knows it's broken :P