Dell Dimension 2400 PC Desktop "roll wheel scrolls down" Questions

...roll the wheel, it doesn't work. How should I solve this problem. The quickest solution is to do one of the two options:If USB - unplug it and plug it back in.If PS2 - shutdown machine, unplug and ...

...roll the scroll wheel atop your mouse. 3) in the RUN box of Windows 7, type cttune and hit enter. Walk through this ClearTypeTuner procedure and you can at least have an easy go at adjusting ...

mouse, here's a handy little trick- hold down the Control button while rolling the scroll wheel up or down. This will increase/decrease the size of the text on the screen but won't affect the graphics