I tend to use PaintSP cause it's easier for non realistic stuff, but I have learning to use Adobe's PS7 cause when you start playing with it you realise how much better it really is.
photoshop is so amaizing i did use PSP and it looked like my sigs were main is MS paint but now i can do it much better and ya ofcourse my sigs arnt as good as guarnere!!!! i can dream!