It looks like your screen mode is possible, at least with one driver.
From http://ubuntuforums.org/archive/index.php/t-446807.htmlThe highest resolution now possible at 60Hz is 1900x1440.
I'm sure you could get it to work if you . . . worked . . . at it. Anyway, probably not the best thing to do right now.
MS Interviewer: So what did you do today?
Interviewee: Well, I was installing Ubuntu Linux onto a separate partition, because yesterday I figured out that it would support my screen resolution if I edited the /etc/Xorg/Xorg.conf file . . .