BTW: Can anyone show me a art program I can use to make quality computer pictures?
(I don't have one of those drawing tablets so I'm looking for a program that's easy to use with a mouse)
What kind of pictures do you mean?
It all depends on your personal preferences though. I used to use Photoshop a lot last year but then I got more interested on using Flash since months ago and I admit it's more reliable for me as a mouse user. Although in before I got a new laptop and still have no Photoshop installed, so I use Flash instead.
But if you talk about realistic quality, Photoshop or SAI should do. Flash focuses more on vector stuff. Just keep practicing on both if you want and see what fits you the best.
Here's my recent stick art in regards to Star Wars' May the 4th (
while I uploaded it on Revenge of the 5th day XD):

click the picture for DA link