Yeah I have seen artrage, the program I have is like that but has more to it in some respects but less in others. It can simulate pencil,oil,pastel,airbrush etc and the pressure from the pen on the tablet affects how hard or wide etc. the brushs are. It can be a bit wierd sometimes as the brush's catch up to were you have drawn but the results can look like real paintings. Mind I have seen people produce awesome stuff from photoshop CS3 or paintshop pro, I think its more about getting comfortable with the software you have and the tools your using, the tablets can feel very strange to start with but the more you use them the eaiser it gets, or so I am told, I still end up drawing the same line half a dozen times till it looks right but thats an advantage of digital painting, undo aint so easy in the real world
