NearestResolution

Hi

I've been having problems with NearestResolution. It works fine on my
coding machine, which is an intel machine with a GeForce 7300 video
chip and an LCD monitor. However, on the testing machine (G4 with a
GeForce 4MX chip and a CRT monitor), NearestResolution only returns
640 x 480 no matter what I put in as the desired resolution.

I'm trying to get res = NearestResolution(0, [1280, 960, 85, NaN]). I
know this resolution exists ib this particular monitor. In fact, I
tried putting in [1024, 768, 75, NaN], which is the resolution the
monitor was currently running at, and it spat out 640 x 480 (90 Hz) again.

note that both machines are running quite recent versions of PTB (i.e.
from 2008).

Is the problem that the graphics chip is too old?

thanks
Todd Horowitz