HaloMods "Classic" Read-only Archive

ok when i try to inject the bitmap for 13 slot on the mainmenu
it says it has to be a ag8g8
Something like that

how do i save it as an ag8g8

Its a DXT format.. you have the .dds plugin right? Just save it as 8:8:8:8 ARGB I think...

But you do realise that will overwrite the map image for all edited maps.. you can't have different pictures for different maps without editing the raw data.