Problem with making an image render after UV mapping it...

I have UV mapped the image that I need to a cylinder, and in object mode it looks just fine but when I render it the image isn’t there. How do I fix this? Please help me, I’m useless in this program.

What rendering engine are you using ?
If you are using the default Blender Renderer:
Have you given your object a material ?
Have yo added the texture to this material ?
Have you set the texture influence to Color ?
Have you set the texture mapping coordinates to UV ?