How to make transparent textures WITHOUT shaders?I know that it is possible because I have transp trails,and once I saw someone who was all transparent (and I saw that without shaders).
Is GIMP enough to make it? Because >add alpha channel is working just for shaders

Depends on the graphics card etc - most will just show transparency as black, but some can pull it off without shaders.

Making them is the same as with shaders, use alpha for the transparent parts.

as long as you do it right, it works w/o shaders aswell.
remember, white is NOT transparent, black is (<that info is needed when using PS atleast)

Well ingame for me It shows black & when some object is there opp to the trans part..it becomes trans..

Also when I upload my semi trans head it is not transperant...doesent semi trans work?I don't have shaders

See above.