I remember a thread around here that spoke of the same problem and potential solutions to it.

The problem I speak of Is when you have two alpha mapped meshes anbd one is in front of the other then the other one will disappear. This is particularily a problem with hair (so I hear) but it's very annoying.

If you duplicate the mesh and put it above/behind, flip normals then if you have MGE's SSAO enabled you get ugly black lines in the air... :/

Please, help? I hate these roadblocks they kill my creativity and I wanna keep creating a while longer (last time it was niftools exporter bugs)...

http://translate.google.ru/translate?hl=ru&sl=ru&tl=en&u=http%3A%2F%2Fakavir.ru%2F3ds-max-tutorial%2Foverlapping_alphas.html I hope it will help you.

I got a lot of help from this CS thread on http://www.gamesas.com/index.php?/topic/1070030-alpha-textures-cutting-into-each-other/

Check instructions by Geonox:

http://www.gamesas.com/index.php?/topic/1053619-alpha-map-glitches/page__hl__alpha%20overlap__st__30

and official:

https://pulse.emergent.net/index.php?autocom=downloads&showfile=511