I used the Track Motion behavior and put it on the mouse pointer. I thought I was going to run into problems when the mouse cursor turned into a finger when I scrolled over a link but it didn't even follow the mouse cursor when it started to move.
If that worked I was going to make a the shape/image I wanted to track/follow the mouse and match move it to the mouse tracking.
I suppose I could go keyframe by keyframe, do you suggest that is the best method?
Thanks for the response Adam!
how many tracking points did you use to track the mouse? Does the mouse have sufficient contrast from its background?
if there is a lot of random movement you might need to keyframe a lot, if its gentle you could get away with less. make your shape as big as you can then you dont have to track the mouses moevments exactly.