Chris, I bought a IFree RF keyboard (not from this link's site, but from ebay).
The Pros, its RF, which doesn't have to be 'aimed' at the interface unit (infrared types usually has to be aimed), it has a built-in trackball, and its small.
Now the cons.... I can't seem to find the makers of that keyboard on the net, and there seems to be a conflict with the USB ports.
For some reason when all my USB devices are connected, the right side of the keyboad will produce numbers instead of the letters that i push. I did find a review of that keyboard and that guy had the same problem as I, but so far i cant seem to correct the problem.
The range is around 30-40 feet, now if i could only see the screen at that distance and fix the problem with the USB, this would be a GREAT keyboard!