[Neil Lowe]

Yep definately a difference if a *.BumpH file is present. From what I can gather the *.tgb file is the large (hi-res) version of the tex and the *.tga file is the smaller (lower-res) version of the same.

I'm pretty sure some of the terrain tex files have alpha channels as well, these areas show up as white when the splash screen is used to view unopenable tex's. Burmascrub.tga is a good example.

Cheers, Neil