Q: Why I can't I see my texture on my model?
A: Hit "6" on the keyboard, this goes into hardware texturing mode [sometimes it's the simple stuff that get you!]. If that doesn't help, open the Attribute Editor on the material and scroll down to the "Hardware Texturing" section and make sure the "Textured channel" is NOT set to "none", preferably the "color" channel. If that doesn't work, then check the "Shading" menu in your panel[s] and make sure "use default material" is NOT checked.
Also, in some cases when the texture won't show even if you render it, it could be that your model has no UVs, you can use a quick automatic mapping to test it.