I saw something like this about a year ago. In fact this might be the same company (they are Canadian). I seem to remember it having full 800x600 resolution and 24 bit color, and the PDA was quite a bit fancier, with a hard drive to install your own software, and an external CD burner. So this version isn't quite as good, but it's close...

Compatibility: Any Pocket PC PDA or notebook with card slot. OS - Win CE, Pocket PC 2002, Windows 9x, NT, 2000/XP.
Video Input: Standard VGA, via CompactFlash or PCMCIA.
Focus Range: Virtual display has equivalent adjustable focus from 2 to 15 feet to work with almost anyone's eyesight.
Virtual Image Size: 15" VGA monitor at 21".
Video Resolution 640 x 480
Battery: Low power consumption, no extra batteries required.