download paint.net
Paint.NET is an on-going project at Washington State University, with features that match commercial applications, including support for layers. It is provided as freeware and is readily available for download. Besides standard image editing features, there’s also a special Effects API for you to create your own special effects. The program also has a strong user forum that supports its progress and development.
http://www.eecs.wsu.edu/paint.net
