imar's spec aint too bad, i'd swap the 2 disks for 1 seagate 250gb.
mobo to something like gigabyte p35 ds3r, abit ip35 or asus p5k.
with whats saved and anything left under the 1200 i'd look at getting a GTS or GTX to go with the 24" monitor.
I was told that over 20" wasnt worth having for some reason to do with graphix?