I dont no it dont really work 4 evry1 dont worry lol
You have to complete the same amount of levels in solo then save it to be able to save the levels in co-op
yes you will, unless you make a backup of your personal save file.
it's automatic at checkpoints
yes it does
No you cannot
dont save him
yes you can go to main menu and press save
Are you referring to Campaign mode? You might not be getting to proper save points, or ending the game before it saves which causes you to start over.
I've only been able to save six so that might be only as much as you can save.
Find the game directory for Call of Duty 4. Inside of that are the subdirectories \players\profiles\. In "profiles" are the list of characters that you have saved games for. In each profile there is a "save" directory with an "autosave" subdirectory. If your character's name was, for example, "Muhammad", the full directory tree would be Call of Duty 4\players\profiles\Muhammad\save\autosave. I have my game installed in a nonstandard location, but I believe the standard tree above "Call of Duty 4" is C:\Programs\Activision\Call of Duty 4, but it shouldn't be hard to find with Windows' search tool.
No it dosent
No you cant not cause it wont be in the file share