Great application for someone needing more than what Paint has to offer.
Paint.NET is image and photo manipulation software designed to be used
on computers that run Windows. It supports layers, unlimited undo,
special effects, and a wide variety of useful and powerful tools. It
started development as an undergraduate college senior design project
mentored by Microsoft, and is currently being maintained by some of the
alumni that originally worked on it. Originally intended as a free
replacement for the MS Paint software that comes with Windows, it has
grown into a powerful yet simple tool for photo and image editing. The
programming language used to create Paint.NET is C#, with a small
amount of C++ for installation and shell-integration related
functionality. 
