No problem. I'm currently trying to get a 6x8 Wacom tablet since I hate painting with a mouse. Take a look at Dogwaffle, too. It's the same kind of "natural" art program but has dozens of more features and animation.

http://www.thebest3d.com/dogwaffle/

Of course, you'll pay a lot more for the full version, but there are lesser ones that are missing features but still nice. Painting with particles is great (tried it in the PD Pro 4.0 demo).