Speeding up game loading times

[CSA]

I play cod waw a lot online , aswell as a little cod 4 and BF2

Ive noticed the maps load pretty slow on my machine and usually im one of the last to join which is annoying, i dont consider my pc to be overly slow or old tech but maybe theres something i can upgrade that will improve loading times ?

e6600 C2D @ 3.3ghz
4Gb kingstone hyper x 8500
Gigabyte DS3P mobo
640Gb western digital SATA II 32mb cache HDD
ATI 4850 @ 700/1100
win xp x64


I was thinking maybe more ram ? or maybe a quad core or a faster HDD ?

what you guys reckon, whats best to speed up load times ?

 

[CSA]

thanks for the info guys, i already have two HDDs , windows set up on WD 320Gb sata 2 16mb cache drive and my games installed on the faster 32mb cache drive, do i have this the correct way around ? should windows be on the faster drive or should the games be on a faster drive ?


........... actually ive just discovered i have indeed installed cod waw on the OS driver , where as all my other other games are installed on the dedicated games drive, an oversight on my part lol i,ll move it and see if theres any difference

i'll also have a defrag i havent done that for a month or so, apart from that i keep the machine pretty clean running spybot and pestpatrol very often

again thanks for info so far