I am creating an app for Windows Phone 7, and am trying to figure out how to make a simple cube. Even though I have been using VB.NET for over 8 years and writing Windows Phone 7 apps for a reasonable amount of time, I am new to 3D graphics. If somebody could help get me started on 3D in .NET (I am willing to use XNA, GDI+, Silverlight, or any other .NET technology for the graphics), it would be greatly appreciated. Thanks.