I got something to work though it doesnt make it look very realistic but it is better than nothing here i will go through the steps but first i will tell u what i used: i used Ultimate Paint© (Bitmap editor sort of like paint) and DDS converter 2.
the steps: (i used Boeing 747 for this)
1. ok i went into the main texture folder with the dds converter and found the Main texture file and converted it into Bitmap
2. i used altimate paint and put painted it
3. i converted it back to dds
( i did it a few time to see my progress)
4 when i was finally done it actully worked
5. i went into the aircraft config. file and found out how to make a new texture.
-------------------------------------------------
||
||
(I need help with this \/ )
my "troubleshooting"
1. when i use the "plain white" 747 and when i go to use the one i made it makes that one and sometimes all of the other 747's white
why is it doing this?
i was surprised that this did work though

P.S. its not completely finished though; i'm doin a midwest airlines texture and i still need to do the tail logo.