Hi lighthorse, if you go to
www.aeroflypro.com/download/ there is a forum just for creating planes and skins. I have a couple of posts here wich contain many links and instructions about creating planes.
once you have the obj file and need to make a tmd and tmg file this link is very usefull
http://www.rodeo.rc-sim.de/New_aircr...erofly_pro.htm
Also feel free to contact me if you need more help or have any other questions and I can help you out.
GeoffH