In the UV Texture Editor there is a 4 grid square the top right one is the 0 - 1 layout that the UV's must lie in

The Top Image is a Default Cylindrical UV Map on a polyCylinder. The bottom image is the UV mapped into the 0 - 1 space that allows a good UV Map. Export this to whatever photo package you use.

To move the UV's just right click and choose UV and move them around.

Hope this helps.

Ooops, forgot the image