I got a new laptop with Vista...the cursor went everywhere...you could
not type in a reply in email or any word doc, anything without it going
all over the place. I was about ready to throw it out the window.
This is what I finally figured out.
Go to Start and type Mouse in search block, then at top of the page
click on MOUSE under System:
MOUSE PROPERTIES WILL COME UP
Under TAPPING CLICK TURN OFF WHEN TYPING
You can also adjust the speed that your cursor moves under POINTER
OPTIONS
This fixed my problem, hope it helps you.:)