What you will need:

Modio
USB Flash Drive (Configured to your Xbox)
CoD Tool


-First, you need to have a WaW saved game on your xbox (Just play a level and hit "Save and Quit" in the pause menu if you don't)

After that, Follow these Steps:

Plug in your USB device
On the dashboard, go to "My Xbox" and go to "System Settings" all the way at the end
Click on "Memory"
Go to "Games" and scroll through all your games till you find "Call of Duty: WaW" and click on it
Go to your saved game and click "Move" after you select it
Click on the "USB Storage Device"


Now go to you Computer and follow these steps:

Open up Modio
Go to "Explore a Device"
Go to "File" then "Open/Close Drive"
Then go to "Content" > "Your Profile" > "Call Of Duty:WaW (4156081C)" > then "Game Saves (00000001)"
You should see a file named "savegame.svg" right click on it and click "Extract"
Save it to your Desktop (Don't Close Modio!)


Now it's time to use CoD Tool:

Open up CoD Tool
Click "Open" and select the "savegame.svg" file
Click on whatever you want to mod! (Don't change "Player Speed" or "Game Speed", it gets to crazy)
After your done click "Save Changes"
It should say "Done., Modded, Rehashed, and Resigned"
Close CoD Tool
Go back to Modio and right click the "savegame.svg" file again
Click "Insert" and Selected the modded Game Save from you Desktop
**It will ask you if you want to overwrite it, click "Yes"


All you have to do now is go back to your xbox,start World at War up and when it asks you to "Select a Save Device", click on the "USB Storage Device" and start the Campaign! Enjoy!