Texturing a plane

Is it possible to make the texture on the plane double sided. I am usinng it for the game engine so to save polys I don’t want to make my plane object a skinny cube. but I want you to be able to see the texture on the top and bottom. How can I do this?

You have to set Texture Face Mode with the Two sided option.
In edit mode :
_select faces.
_Ctrl+F
_Face Mode Set
_Two Sided.