my games keep crashing

[virtualguyex]

hey everytime i wanna play planetside, it crashes to the desktop with an error reporting message, or if i wanna play postal 2, the game starts up and just freezes. or halo, it wont even start.

my specs are
512 ddr
1.80 ghz amd athlon
80 gig
cd burner
dvd drive
nVidia 5900 xt (56.72 drivers)
Windows XP Professional


does anybody know whats wrong? PLEAAASE HELP!!!

thansk in advance

[chungimation]

try giving a lil more detail about the error message and what you actually see happening?

[virtualguyex]

lol nothing happens, lol, i tried to open planet side and in the error report it just says it couldnt launch the .exe .


and with postal, there isnt an error message. the game opens and just freezes.

i've tried installing diff drivers, but i still get the same problem