I use Autoit to do some mouse moving. I have a 3 monitor setup, each with different vertical resolutions, the script file allows me to go from monitor to monitor in either direction without expereincing the dead zone one would normally experience when going from a 1200 px high screen to a 768 px high screen (all screens aligned at top). Perhaps you can look into something like Autoit? I dont know how you would call it via lisp, but in theory, you could create a call that will move your mouse for you.