Removing window transparancy

Hello there,
I'd like to make a repaint, but in order to do that i'd like to remove the transparency of the rear windows (green arrow in pic). Basically i'll like to turn the 208 into a cargo. Is there anyway to do that with just textures themselves?
Otherwise, i could edit the model itself, but i don't know of any .mdl to .3ds/.gmax converters. Do they exist?
Thanks for your help

I'd like to make a repaint, but in order to do that i'd like to remove the transparency of the rear windows (green arrow in pic). Basically i'll like to turn the 208 into a cargo. Is there anyway to do that with just textures themselves?
Otherwise, i could edit the model itself, but i don't know of any .mdl to .3ds/.gmax converters. Do they exist?
Thanks for your help

