Get a monitor!
I'm currently on a 1600 x 1200, I have been since AD2000 (CRT first, then Samsung SyncMaster 204b), and I won't go down on either dimension.
Granted, 2560 x 1600 is way too expensive, and 1980 x1200 is a bit of a rip-off, what can we do except wait for something in-between.
That monitor is fine for gaming if you never read any text, don't read these forums, ... oops.
It is your choice, but please consider whether that monitor is what you need.
Be very aware, just in case you aren't, that monitor size is in pixels rather than inches, if a monitor is bigger in inches but not pixels, there's not much difference.