Duel Monitors for PC Gaming?

Anyone here is using a Duel Monitor setup?

Question?

I like to play sims so I was wondering is it possible to lets say be in the cockpit view on one monitor and have a external view of your plane one the other monitor? And how do you go about doing it. If you have any links to some good sites that would help. Thanks guys

you spelt dual wrong

but anyway you will need a good graphics card to play games with dual screens but I would get dual screens just for general PC use