How to stop the cursor from jumping around?

have you used - on control panel - keyboards/mouse icon -on this there is a section for control of mouse high and low its a good place to start

the workshop
August 2009

It's your non-typing fingers brushing against the touch pad on your laptop - the cursor moves while your're typing and text goes to the wrong place - I fixed it by downloading a mouse driver that disables the touchpad as soon as a regular mouse is plugged in - ALPS mouse driver - from here...

http://www.versiontracker.com/dyn/moreinfo/win/208890

Another feature is a big circle on the screen when you depress the Control Key.

What you are experiencing is called OPDFS by computer experts - Old Persons Dodgy Finger Syndrome

Good luck...

Peccavi
July 2009