Double-sided plane with texture on Unity 3.4

How Can I Use double-sided plane with texture on Unity 3.4??

I tried to Use “Cull Off”,but it’s useless.

Please Help!!Thanks!!

Cull off in a shader works fine for unlit shaders. For lit shaders, you have to invert the normals. You’ll get better performance just doubling the geometry and flipping the normals on one copy.