Memory

[spartan1121]

yeah i definately reccomend CS:Source. I've only had the money to buy one fps game for smputer so far, and thats what i went with, it's a great buy for only 30 bucks.

 

[overlord20]

well i ran F.E.A.R just fine until my disk got scratched. but yea i was thinkin of BF2, Far Cry, and Half Life 2 for games. i have a cheap graphics card. so i think just buy 2gig of ddr dual channel

 

[Apokalipse]

I would get something like this:
7600 GS AGP - Will have absolutely no problems with CS:Source
and either:
512MB DDR RAM
or
2x512MB RAM

 

[Sora]

Yes Once again I agree with Apok on the ram. The 7600GS or an X1650PRO will eat CS:S up but actually if you wanna go cheaper this card will also beat it down.

Newegg.com - SAPPHIRE 100182L Radeon X1550 256MB 128-bit GDDR2 AGP 4X/8X Video Card - Retail
or this
Newegg.com - CHAINTECH GSA73GT GeForce 7300GT 256MB 128-bit GDDR2 AGP 4X/8X Video Card - Retail