I just added a project of mine called Thumbnailer-net to Google Code as an Open Source project. It is written in C# 4.0, VS 2010.
You can find it here: Thumbnailer-net
It is a simple image/thumbnail generation library to scale images from an URL or locally, and you can even create a snapshot of a website!
I use it here on ThatsToday.com.
Quick example:
ImageScale scale = new ImageScale(new Uri("http://cnn.com"), 100, 100);
scale.SaveFile(@"c:\cnn_com.png", 100);
These two lines will take a snap shot from CNN.com and generate a 100x100 jpg from it.