alot of people use a free peice of software called GIMP, it is pretty good for free, i have photoshop but i got it off a "friend"
my friend recently acquired the full CS5 suite, shame its for Mac though
LOL Your "friend" needs to learn to search properly (a lot of CS5 requires 64bit btw).
£200 or £65 if you are/ know a student or teacher according to Amazon. There may well be cheaper places to get it from too. I honestly wouldn't want to be without it as it saves so much time with PP and you can turn photos around with only a couple of clicks.