Playboypenguin has it right; always use a tripod, no flash, and a timer for the shutter. A remote shutter release helps, too.
My light box was made with a mostly transparent plastic storage box ($7) lined with a layer of tissue wrapping paper. Clamp on reflector lights and you're all set.
Shooting outdoors on an overcast day works pretty well, too. As long as you eliminate shadows and camera shake, you'll be OK.
And Photoshop for adjusting brightness and contrast.