Thanks to Justin and Bonnie, I got a Logitech Cordless Mouse and Keyboard for Christmas this year. However, I had some real trouble getting the mouse to work via USB under Linux. The keyboard worked fine on the first shot. However, the mouse would only move vertically on the screen and that was moving the mouse horizontally on the mousing surface. After much digging, I found the problem. If the "usbmouse" kernel module is loaded, it doesn’t work. If type "lsmod" as root, and see "usbmouse" listed, try removing it (type "rmmod usbmouse") and then restarting X. It worked like a charm for me with the "IMPS/2" driver.