TRANS2D is my C#/DirectX 2D graphics library. It's a work in progress, but it's usable at this point. It allows for some neat tricks and effects that you can't pull off with a completely standard approach to 2D rendering. If you're interested, have a look at the
project page.
The source code uses the Spring '05 Managed DirectX update, and was put together in Visual C# .NET 2003. This stuff is not for total beginners - I'm glad to help people out with using it, but if you aren't already experienced with C# and the basics of DirectX, you should start with something simpler.