Regarding the Cheats & Hints.
Call of Duty
World at War
to enter cheats opent console.
to open console go to game options and put console on
g_gravity 1-OO (800 is noormal) -puts how heavy things are (affects how long you can stay in the air before hitting ground)
g_speed 1-OO (190 is normal recommend 250 or 300) put how fast dou you go
god simply god
sf_use_ignoreammo 1 toggles do you unlimited ammo
sf_use_tireexplosion 1 killing enemies makes their bodies become many tires that bounce around
ufo makes you go anywere you want (E up) (Q down)
give all gives you all weapons in the game
give [weapon name] gives you particual weapon USP RPG etc.
you can find more cheats in console but the ones here are general one others are for fun
P.S. this also works in Call of Duty 5 and Modern Warfare 2.
In Call of Duty 5 Zombies in Co-Op Der Riese map input in console "DO" then push the arrow down to the cheat dog melee attack or something like that insted of 100 put 1 so hell dogs will not bother you anymore