I have alltered pre-existing vehicles but don't know how to change them into playable files. Please help.
convert them to .sm, but u might wanna make a new skin for it too if u havent already
download mod developement toolkit http://mdt.planetbattlefield.gamespy.com/index.shtm v2.75 it has a 3ds to sm converter
put the .sm file in the standard mesh.rfa and put the texture (if you edited it , it should be in .dds) in the texture.rfa file