I can't seem to get this working, but There's a link here:http://www.ultimarc.com/avgainst.html
You may need the "old" version of the ATI software (but again, I have bad luck with this).
Enable Auto-Panning in Windows XP and 2000.
Click Display, Properties, Advanced, Displays. Click on the active (top left) Monitor heading. In the "Max Resolution" drop-down, select "648 X 288". The desktop will now be a clear non-interlaced display, which auto-pans up and down. If you wish, click on the ATI taskbar icon and increase the desktop resolution to 800 X 600 or 1024 X 768. To turn off auto-pan, select 640 X 480 in the "Max Resolution" drop down box, as above.