I don't know if you are still looking but this might help
Cheat Codes for Call Of Duty: World at War
Game ID: CALP-72EF25EE
Platform: Nintendo DS
6 Codes Found
Print Page
1.
All Levels/Difficulties Open
021b7848 ffffffff
2.
All Challenges Open
021b7860 ffffffff
3.
Infinite Health
621c16d8 00000000
b21c16d8 00000000
0000012c 0500012c
d2000000 00000000
4.
Walk Through Walls ON (L+Up)
94000130 000001bf
621c16d8 00000000
b21c16d8 00000000
dc000000 000000c4
a0000000 00000000
b0000000 00000000
dc000000 0000006c
90000000 00000001
20000000 00000002
d2000000 00000000
5.
Walk Through Walls OFF (L+Down)
94000130 0000017f
621c16d8 00000000
b21c16d8 00000000
dc000000 000000c4
a0000000 00000000
b0000000 00000000
dc000000 0000006c
90000000 00000002
20000000 00000001
d2000000 00000000
6.
Boot Animation Test Menu
020032d4 e3a00000
these are written for the EUROPEAN version but I have once used EU codes on a US game
(Orcs & Elves) so it could be possible (however I have no idea where to start)
I must admit this game is like a fine woman: freekin' sweet yet insanely hard to handle