Three monitors setup on machine with integrated graphic card

"One solution that I haven't tried but works is using a USB-DVI adapter. They do run about a $100 (and way up, haven't seen any under) and you easily use multiple adapters for additional monitors.

Here's one for example: http://us.kensington.com/html/14499.html"

You can use 3 monitors with an integrated graphics and a card add-in in a PCI slot. I have 5770 in the PCI16 slot and a integrated Geforce 70xx and play games across 3 monitors. The trick is just to leave the BIOS option for integrated graphics selected as the primary display, if you don't turn this option on, then Windows will not find it. I find the frame rate drops like 10FPS when using this combination but its very playable with no lag.