These guys have a $150 unit which drives a 1600×1200 display via a USB port, and, wait for it … you can have up to 6 attached to a single PC! More details here http://www.sewellsupport.com/archives/adding-multiple-displays-to-your-pc-with-the-usb-to-dvi-high-wes
Reportedly performs well on low end systems and supports Vista, not sure about ‘Glass’. Looks neat too, about the size of a pack of cards. Hope I can find a UK supplier for £75…
