Both games running, COD2 runs great and COD4 needs config to run with better FPS.

Call of Duty 2

Game runs great, can run in 50+ FPS.

Singleplayer & multiplayer setup

Settings I use get 28-50 FPS, they are best visual-performance settings ratio.

You can set settings yourself or use config.

Download this config Call of Duty 2 olio Config v1
You need to start game and create profile, then exit game.
Extract config.cfg and config_mp.cfg to
C:\Program files\Call of Duty 2\main\players\YOUR-PROFILE-NAME

OR

set settings manual

Use next:

Goto Options

System > Graphics

Video Mode 1280x720
Texture Filter Bilinear
Anti-aliasing Off
Rendering Method Preference DirectX 7
Sync Every Frame No
Soften Smoke Edges Off
Number of Corpses Small

Under Texture Settings

Texture Quality Manual
Texture Resolution Normal
Normal Map Resolution Normal
Specular Map Resolution Normal

I didn't need better config to alter graphics more because game runs and looks great.

Done!

Screenshots:
SCREENSHOT 1
SCREENSHOT 2
SCREENSHOT 3
SCREENSHOT 4

Call of Duty 4: Modern Warfare

Runs ok, with lower resolutions it can get a lot of FPS.
I like bigger resolution, so I get 18-38 FPS with my config.
For more fps just lower resolution.
Also my multiplayer cfg is better than yitch3, I got more FPS with it !

First you need to start game and create profile.
Download this Call of Duty 4 Modern Warfare olio Config v1
Extract config.cfg and config_mp.cfg to
C:\Program files\Call of Duty 4 - Modern Warfare\players\profiles\YOUR-PROFILE-NAME

That's all.

Screenshots:
SCREENSHOT 1
SCREENSHOT 2
SCREENSHOT 3
SCREENSHOT 4