I'm a day trader, and also a gamer. Interested in Crossfire card, but I want triple monitors. What do I do?

I know I am going to need another videocard, but I wanted to do is do my day trading on three montors and when playing games switch back to one. What's the best thing to do??I'm a day trader, and also a gamer. Interested in Crossfire card, but I want triple monitors. What do I do?USB to DVI. I've run the eVGA USB to DVI device along with the external VGA. Works fine. I did have to go to their website to get the driver for Vista x64. I think that you can run up to 6 monitors off a USB hub. The devices are $80 each though so it's an expensive solution if you want a lot of monitors.