[fly_zo]

you mean main menu or loading splash screen ?

you'll need custom tga file ( your desired pic) 1024x1024 24bit ( mat file you can "borrow" from stock ones)

for main menu :

game root\\Missions ..... ( background.mat & background.tga)


for loading splash :

new wrapper: make new folder in your game root\MODS\ "name of your mod" \ gui\ ..... ( background0.mat & background0.tga)

since it loads files from MODS alphabetically watch that you don't have similar mod listed first
( choose name so that your folder get on top )

for filelist version:

game root\files\gui\...(background0.mat & background0.tga)

make entry for those two files in filelist.txt

hope that explains it

Z