I thought for WaW your account was held server side as opposed to Cod4.. may be wrong though.

 

Is it on Steam or did you buy a hard copy?

I got mine on Steam and still haven't found a way of backing up my profile

 

For me, everything is saved in -

C:\Users\Username\AppData\Local\Activision\CoDWaW

This is on Windows 7 (think its the same with Vista). Could be completely different with XP.

 

Steam does have a backup feature...

Log into steam, go to my games, right click on a game, scroll down and select back up game files, choose save location.

 

On XP it should be:

C:\Documents and Settings\<username>\Local Settings\Application Data\Activision\CoDWaW\players\profiles

 

That will not backup the saved games. Follow the advice of those who gave you the path and save the files from there.

 

may need to show hidden files or it might not show up

 

Still didn't work for me, I lost everything.

 

Twice. Always been able to save my data.