I'am having a problem with the gps system when I'am flying. I have the flight planner all set up, set to gps mode...but when i get take off.. and get airbore..set autpilot on and then set it from nav. to gps.. nothing happens, no turn or anyhting.. and my plane totaly goes off track. I don't know why this is happening, Because i have used the gps mode before. I know this sounds like a stupid question.. but im pretty new to the flight sim world, any ideas on what the problem would be here?

Did you create a flight plan, right?

With Auto Pilot on and Nav/GPS switch in GPS position, you must also turn on NAV(or enable NAV). Aircraft will then follow flightplan. I have found that turning on APR will also have the same effect as NAV when using GPS to fly a flight plan. john(KEWB)