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How do I unlock the airplanes? I checked on cheat websites and they all said stuff like beat area 4 submission 5 and stuff like that but I don't get it. can sum 1 help

Yes, each country that you visit is considered an area. There are 8 areas in all. Once you enter an area you will see diferent sub-missions in sets of 3. If you look beside the name of the mission you will see a number. That is the number of the mission.

For example, you need to beat Area 7, Submission 10 to unlock the F-22. You do this by going to area 7, and beating the sub-missions untill you reach sub mission 10.

Does this help you? If not go to the site below and post your problem in the designated forum.
http://www.freepowerboards.com/overg/profile.php?mode=register&refer_id=2