You're off topic for this forum, which is dedicated to Windows Live OneCare. You may want to try the Windows newsgroups here: http://support.microsoft.com/newsgroups/Default.aspx
I'm not sure what you mean by jump all around, but it could be a problem with your keyboard or mouse. I recently had the scroll wheel on my wireless desktop elite keyboard act up and cause pages to scroll unpredictably if the keyboard was bumped - which it was when I typed, of course.
-steve