This program is really sweet. I will work on this post later, for now just a description from the website itself. Only so much: it is well worth exploring, I just know you WILL enjoy it. "Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go." www.stellarium.org
Links for NetConnosoirs. Ctrl-D material to the roof.