For Windows XP SP2 or later (including Vista).

Latest version: 0.2.0 (alpha), released 6/20/2007. Download it (1.6MB).

WARNING: This is alpha software, which means it's not feature-complete and not fully tested. It may cause your computer to explode. PLAY AT YOUR OWN RISK. That said, many people, including my grandmother, have installed it without any problems. If you do run into trouble, or have any questions, please let me know.