Definatly Will Work, 4GB Ram Can Play About 30 Call of Dutys, So Yer - Dont Worry, It Will. No Matter the Computer, It Should Play Just Fine, PS - Here Are Some Cheats,
Call of Duty 4 Demo & Full Game Cheats
Cheat Codes (DEMO VERSION)
Enable the console from the game's in-game options.
Hit the tilde key (~) to drop the dev-console.
Type seta thereisacow "1337" and then press ENTER.
Type spdevmap bog_a and then press ENTER.
This will start the demo with cheats enabled.
When playing, drop down the dev-console and enter
the following codes and hit ENTER to activate or toggle them.
Cheat Codes (COMPLETE VERSION)
Same as above but after you load up the spdevmap bog_a exit out and load the level you are currently at, or a new game.
You can not select "resume" and have the cheats function you can however select the map/act you want to start at with the cheats enabled.Cheat Codes
Enable the console at the options menu. Then, press ~ to display the console window. Type seta thereisacow "1337" and press [Enter]. Then while playing the game, press ~ to display the console window, and type one of the following codes and press [Enter] to activate the corresponding cheat function. Note: Open the cfg file with a text editor and change the "seta monkeytoy" value from "1" to "0" if needed.
Result Cheat Code
God mode god
God mode but screen still shakes demigod
No clipping mode noclip
Flight mode ufo
All weapons give all
Full ammunition give ammo
Add laser sight to all weapons cg_LaserForceOn 1
Enemies ignore you notarget
Change maps map or spdevmap [name]
Spawn indicated item give [item name]
Set gravity; default is "39" jump_height [number]
Set speed; default is "1.00" timescale [number]
Remove gun graphics cg_drawGun
Zoom with any gun cg_fov
Better vision r_fullbright