Thanks for the quick answer! Don't remember what resolution I have them set at, but I know it's far below 2560x1600.
So then how does that work physically? Do I need some kind of dongle that plugs into the HDMI out on the mobo and provides two dvi connections for the monitors? I'm pretty sure my monitors have VGA and DVI but not HDMI. Hopefully whatever additional cables/connectors needed are cheap, because if it doesn't cost significantly less than a discrete graphics card then what's the point?