Paint for Mac

[1missing]

I recently started using my i Book G4 since my PC has been acting strange. But, my G4 doesn't have a photo editing program. I'm not looking for a big fancy, expensive program. I'd be really appreciated if any of you have information about a program thats even remotely similar to Paint. For free ofcourse since I'm uhh, not making the kind of money I'd like to be making, to put it simple.