Pleease reference this thread:

http://www.thescripts.com/forum/thread596738.html

Size your Pic file to .5 x .5 inches. (for some reason this was necessary.)

You can use Microsoft Photo Editor or Photoshop for editing/cropping.

Here's the C# code:

this.Icon = Icon.FromHandle (new Bitmap(Bitmap.F romFile(YourFil ePath_PIC)).Get Hicon());
Stream st = new...