I wasn't sure where to post this but I'm sure one or other of The Ministers will move it if wrong.
I do repaints of the aircraft that I use in Air Hauler (see sig for a simple example) usually using either FS Repaint 2.2 or Paint Shop Pro 9. I use other progs if I have to - I have PSP5 and Photoshop 6, as well as the indispensible DXTbmp.
My repaints don't normally require alpha channels as such - at least I've never used them. Now I'm repainting some Flight 1 aircraft and find that the text-o-matic utility which adds them to the aircraft installation, requires an alpha channel version (as a bmp).
I've searched via Google, confused myself for ages for very little gain and still haven't managed to find what I need to know.
I've done the company repaint, I 'just' need to save this image in an alpha type format.
Can anyone help with a simple explanation of how to go about it, please?
I can't use DXTbmp, because the templates are very wide and get squashed in it - even when saved. The templates come in a layered psd file format.
It's getting rather frustrating. If all else fails, I'll just put the alpha blank template in the utility and put up with it.
Here's the main paint for the ATR72:

and this is the template alpha channel provided:

TiA
J0hn