Back before my Toshiba laptop crashed, I used Paint Shop Pro 7 - which is a very awesome program that does everything I want to do image-editing wise. But, since I have a Mac now, it's not compatible, so I'm currently using
The GIMP, which is FREE and very powerful, it has most of the same features, but takes slightly longer to do the tasks. (Also has a bunch of cool filters and features) I highly recommend it. But, of course, I've never owned Photo Shop so I couldn't tell you about that.