USB Video Card?

I just bought a new computer with the latest graphics card hoping to hook up my multiple monitors to it. When i tried to hook it up i could only hook up one monitor to keep the SLI mode in the video cards. I wanted to add more video cards so i could hook up 3 more monitors but all the computer's PCI Express and PCI, AGP slots are full and there are none availible. The magma pci expansion is just to expensive for me then I saw on the internet that there was a usb external video card that would probbaly work. I am wondering if anybody has tried these with Flight simulator and if they are hardware accelerated. I dont need it for views just to display different instruments like the GPS or NAV/COM

thanks for your help

Here it is:

http://www.usbgear.com/USB-Video-Card.html

Take a look at this

http://flyawaysimulation.com/forum/topic/26938/cfs-3-dual-monitors/#167390

Bob

what computer did you buy?

I thought you could use it for the computer's video card, not an external display... That stinks, I need a better card than my 64 meg card!!!!