thank u for u help but the same problem!
let me tell u exactly what i did,
1-extract isreal F-15c as "F-15-PAINT-R-DEF-4" to TempTextures.
2- what i did change the flage and make the coler dark.
3- save skin as BMP rename it "F-15-PAINT-R-DEF-5"
4- put it in D:Eagle Dynamics\Lock On\Bazar\TempTextures
5- then open lockOn, editor mission , chose israel F-15c then no change!
please if there any cleare and simple way tell me becouse this is the first time.