you can modify viewer.c probably in incudes or somewhere else in ganestudio folder, it is used for showing models edited in MED, where you can set the material of transparent entities properly, or set simply the OVERLAY flag always for models. I can share my modified code tomorrow if anybody interested...

Mythran@ you don't need to have an alpha channel as a third skin with 24 bits/pixels file! Please check you messages!

Everything works pretty nice (MED viewer):

There is another small alpha problem, but I always face it myself as well, you can fix it by using the material, that was suggested by Ch40zzC0d3r!
Maybe there are some other ideas, how to fix this, I would be glad to hear them too.

Actually i was just worried about getting it to work. Those problems are for programmers
Thank you all,
Thank you very much 3run.

Mythran@ you are welcome man