Can anyone help me? I prefer having the garmin gps (the one that pops up) as the navaid rather than the integral nav display (mdf I believe) on the VC of the default 737. How do you edit the panel cfg, guys?

Can anyone help or point me in the right direction? I've tried google but I can't find any tutorials of exactly this issue.

Anyone? It must be possible to replace the nav mdf with the gps instead.