Firstly go control panel > User Accounts and Family safety > User Accounts > Change user account control settings and pull the slider to the bottom, press ok then ok to the prompt, restart your pc, and now demos will be saved to your mods folder, im not sure whether you have to make another account for cod 4 as it might not move that so in case your old demos and profile should be located in C:\Users\"Your Name"\app data ( You will have to enable hidden files via top left "organize > folder and search options > View > Show hidden Files and folders) \and i think its going to be in either Roaming or Local, you have to look, your most likely looking for a folder called activision which is where the rest of your demos are.
Posted on Wednesday, 10th March 2010