Css all the way.
I always love the single player of COD games. I really hate the multiplayer.

I like the cs:s multiplayer alot more.

Css ftw.

COD has awesome single player though.

Css for the variety of maps and mods,it's a huge community ,etc. etc. =)

CSS = Gets boring very fast. But after little break (I mean couple week break) you start playing it again
CoD4 = Doesn't get boring fast, but when you're lvl 55, it gets really boring.

I like COD4 better, but I've only played it on the 360 because my PC doesn't have enough balls to run it well.

That's the only thing that really gets me, is that while COD4 is excellent, not everyone is able to experience it's beauty.

COD 4. It has a good storyline and better graphics. But choose CSS if you don't want to be pissed off playing COD 4 on veteran level.

Definatly COD4, COD4 is a good game if u just wanna have continuos fun and to own people by sprinting behind them and knifing them. It is a good singleplayer game to let you anger out. But for multiplayer definatly css cause it is better team play were u play for the teams benefits not for your own. Btw if css works good on my comp with no lag will i be able to play cod4 on it?

Computer Specs(That are shown by clicking propeties on my computer)
Intel(R) Core(TM)2 CPU
6320 @1.86GHz
1.86GHz, 0.99GB of RAM
Physical Adrdess Extension

(that was a pain writing that :s)