
first of all, copy the folder named texture and rename it. eg texture.* (the * can be replaced with anything you like.) Now go into the aircraft.cfg file and copy everything under the [fltsim.0] heading should be at the top.
paste it below and alter it. change fltsim.0 to .1 at the end.
you will also need to change the 'title' and the 'ui_variation'
now save the .cfg file. 8)
**At this point you may want to go into the game and check to see if the new version of the plane is there. It should still bare the same livery though.**
if it is then well done, if not then simply try again

you will then most likely need DXTBmp found here:
http://fly.to/mwgfxthis converts the files so you are able to se them in your paint program.
once finished painting, convert them back into DXTBmp and save them as a DXT3 file.
hope you have some joy repainting
ant 8)