The Nvidia texture tools are easy to use for converting DDS <-> TGA with alpha maps and stuff. The actual work can be done with GDI+ and the .TGA file. I'll post here (or PM, depends on your preference) when I have something beta-rish.
Link to the Nvidia Texture Tools: https://developer.nvidia.com/gpu-accelerated-texture-compression
Cool! I actually do use the Nvidia texture tools to do some image compression when GIMP gives a not so good result. I only used them for that though, and had kind of forgotten about that possibility.
You can post the result of your work in this thread, no problem!
There will be another file that will need a similar treatment:
lcd_large_al_a - an amalgam of parts of the three vertical LCDs. When the game determines that the vertical LCDs are too distant to show the normal resolution versions, it uses this file to show a non glowing fixed image on the vertical LCDs (also, there is no image rotation going on at that point).