uv problem in opengl

Hi,
I am importing an obj billboard model ( two planes crossing ) in an opengl window but I get this problem with uv :
[http://img368.imageshack.us/img368/3508/uverror3ev.th.jpg](http://img368.imageshack.us/my.php?image=uverror3ev.jpg)
You can see the border of the alpha map tree…
Suggestions ?

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Hi RamboBaby,
I am actually trying to import it in a simple octree viewer ( cone3d ) in opengl.
That white lines are the octree subdivision .
I am going to try what you suggested , but I doubt it being blender fault ( the obj I am exporting looks fine , maybe something wrong in the uv of the second plane . the side one).
I guess it might be a problem in how opengl textures and how I handle textures maybe though, so no Blender involved.
I’ll let you know if messing in Blender changes anything.
Thanks,
Gab-