I got an eMac (short for educational Mac) from a friend. It is one of thesehttp://en.wikipedia.org/wiki/EMac in case you want to know exactly. Anyway, I wanted to try to get some function out of it seeing as I'm a Linux guy and a windows guy, Apple is something new to play with. My mouse no longer works with the Mac and I don't know why and for the life of me with all my experience with Win. and Linux I can't fix it. I have two that I've tried, both of them were Microsoft mouses that had worked previously but then one day they stopped. I can move around with the keyboard but the mouse is a no go. Does anyone know what I might have done to screw up a perfectly functioning mouse? I know they are connected correctly because when I plug it into the USB port the laser light comes on, problem is the cursor in the screen doesn't move. I'd appreciate any help.