Dell Latitude D630 Cursor Problems

Hi, when I try to use my latitude, the cursor and highlight are extremely erratic. When I try to enter the start menu, I can barely click on the right application because the highlight keeps rapidly switching from side to side and when I click it opens whatever was highlighted. I can't get into my System Properties because the tabs keep switching and as soon as I try to get back to the tab I want, it does a cycle through all the tabs. I can't use the arrow keys to control the highlight. Reinstalling the touchpad driver didn't help at all. :(

Thanks,
Noodles