CarpeThis, DirectSkin provides support for .Net applications. The DirectSkin OCX is integrated into your application and requires no special software on the user's desktop,beyond your application.
If the user does have WindowBlinds installed you can choose whether to have your skin override the system skin or to use it for a consistent look.
If you are interested in using DirectSkin in your development, please feel free to email me at corpsales@stardock.com for an evaluation license and a .NET demo app.