Some key programs to get:   FS Panel Studio / DXTBmp / Paint.net

With these you can view /change/edit textures, panels and screens.  Then alot of trial and error till you figure out where things are located on the panel versus texture.

FS Panel Studio is a payware but the other two are freeware off the net, just google them.


Then just remember when editing textures in FSX, they are inverted and 180 degree flipped.  And always always always make a copy of your original texture / panel folder before you modify anything incase you make a mistake you can restore to the way it was.