GPS screen default

My FS 2002 game will not default to the original GPS screen, instead, when the GPS icon is activated a long rectangular screen appears with MODE, a circle with an arrow, cursor buttons and ENTER and CANCEL buttons appear at the top of the screen, although I can work with this screen I cannot get the original GPS image/screen up on my game despite uninstalling and reinstalling the game - CAN YOU ASSIST PLEASE?? Regrads, Lawrie