hey...
tell you i always enjoy your comic strips in the chronicle... keep
it up man. do consider it as a serious business sideline someday. u
draw very well and able to convey facial expressions that are spot
on. and i like the understated style... meaning not too much
colors, as in not too distracting... well i dunno how to put it...
brain is dead
sigh... exams... 
monitor determines resolution in the sense if u get a LCD, you can
NEVER go beyond the native resolution the monitor is rated at...
and going below that results in ugly interpolation...
well what do u use ur gfx card for? if you using it for mainly
graphics work and performance in games are of a lower priority, i
would advise getting a Radeon 9500 or above card that has DVI
capability... and of course its capable of reasonable perf in
games... but dun expect 60 frames per second in Doom 3 with all the
eye candy on... Radeons are reputable for their image quality than
nvidia cards being capable of better color reproduction than
nvidia
but if you are a serious gamer, i would recommend Nvidia cards
instead. a geforce fx seems to be at a good price point now/
i assume u are on a budget as i believe we have something in
common,,,, poor undergrad students. 
all the best man!
talking abt LCDs, since u are a gfx designer... recommend u check
out Eizo LCDs... using one now... and the color reproduction is
BEAUTIFUL... compared to others. And anyway trust your eyes... go
check out both 17" and 19" LCDs... if 17" u can read the text
without straining your eyes, getting a 17" is a no brainer. 19" is
kinda expensive when u are talking abt quality LCDs.
and try not to get a MX for your next purchase... the image quality
isnt very good