where do i put a moded rez gun file to make the gun look diferent

where do i put rez files to make guns in game look cool/

Press your start button. (In the far bottom left of your screen)
Click computer.
Click Local Disk or whatever Folder is named " (C "
Click "Nexon"
Click "Combat Arms"
Click "Game"
Now put the .rez file you have into that folder. If it says something about "Copy the file or replace" Then you have done it right. If not then oh well.