I can't believe no one has posted the link to this sticky yet. I guess people just want to keep arguing, but anyway. This link will give you a step by step walk through for setting up your glass tank. Since it's so cold up where you are foil wrapping the screen of the cage will help keep the humidity in since you'll need a heat lamp to keep the temps at a proper level and heat lamps naturally dry out a tank but wrapping it keeps all the humidity form escaping through the screen. Just follow this thread and you will be good to go. It worked perfectly for me when I had my two glass tanks. Everything stayed spot on :) here ya go.
http://ball-pythons.net/forums/showt...-With-Pictures!