I have a Dell Latitude D810 laptop that I just "rebuilt" with an OEM Dell CD with XP-SP3. (Originally had SP2.) I cannot get an external USB [wired] mouse to work. I have tried several; it's NOT the mice! External [wired] USB k/b works fine. I've tried it on the port replicator and the laptop itself. When I plug the mouse in, the PC recognizes it, and the optical light on the mouse comes on. However, the Hardware Install Wizard runs. I can't find a driver! I've tried using the Dell OEM CD - nothing. I've even tried dowloading a "generic" mouse driver - nothing. I have MS Office and several other programs loaded - I don't want to have to take the time to "rebuild" again - that's my last resort. HELP!!! Thanks!