Goto here to get the downloads:
http://dygytalworld.ehost-services13...p/Support.html
Download pegasus and its usb drivers and also download the gear ratio calculator. Then you can play around with your tire sizes and your gear ratio to see if it will work or not.
You can also post up what sizes your looking at getting and you gear ratio. One of us guys can tell you what's going to work also. Hope this helps!
Lars