Hi, back again.
I have found a fix to get your USBs working again
Use Windows Help to restore to a earlier setup - according to windows no actual data (files) will be lost but any installations after the restore date (i.e. the camera software) will be lost.
I did it and I'm up and running again.
Windows -> Start -> Help & Support -> Undo changes to your computer with System Restore
PS.
If your PC won't even start up like mine after installing the camera software, remove all USB devices inc cables then try to start it again. It should now boot up normally. You can then perform the above to get your usb ports working again
Good luck & hope this helps.
Andrew M
January 2009