I recommend photoshop, it's a good photo edit software, but I think LAPIII can also try the picasa.
I agree, Photoshop is a great program and I've been using it since version one. But it is also VERY expensive. For those who don't need all the sophistication Photoshop offers, they may want to try it's baby brother, Photoshop Elements. A lot less money and easier to use.
PaintShop Pro is an excellent photo editing program too.