Ok I'm not seeing the downloaded missions in the game after i install the files into my missions folder.

I follow the read-me files to the letter, but when I enter the game I don't see them anywhere, I even looked in the editor as well but not seeing them.

Where do I go from the main menu to find the downloaded missions that I installed?

Ok you've downloaded a missions. Are you sure you put the "example_mission.pbo" file in the correct ArmA directory?
The standard directory is "C:\Program Files\Bohemia Interactive\Armed Assault\Missions".
If you've done everithing correct you should see the mission in the game under the missions section.ù

Maybe you put the mission file in "C:\Documents And settings\ArmA Other Profiles" ????