You seriously want a "code sample" of something so large?? If you're new to .NET, this project is WAY over your head right now. A simple code snippet isn't going to cover everything you need for this.
You've got a lot to learn about just the .NET Framework, ASP.NET, patterns and practices, and the language of your choice before you even consider adding MVC3 to the mix.
But, if you want to jump in feet first, I suggest you start reading the stuff
here[
^].