OK. CS3 is still in its BETA stages, so it can be a little buggy. But you can get it free from http://labs.adobe.com/technologies/photoshopcs3/ (cant give direct link because i cant get to they're site for some strange reason..blame firefox imo lol)
Edit: Lol, didnt want to get in trouble with adobe, so leaving CS3 up here. it 100% free & legal