clear textures

[gadolinite]

I heard that operation flashpoint considers clear textures as glass.  How do you create clear textures? There is no clear color in any of the image editing software.

[swift88]

u set the opacity of the *(swift cant spell)* texture to bout 70% so its nearly see-through (done in paintshop, or photo shop) so when u import the texture, it will come out see-though like (im saying this because ive been told this (never tried it)