Paint - comes installed on Windows, I have only ever used it to re-size pictures when a paint package hasn't been installed. Preitty crap really.
Paint Shop Pro. I've used this on the PC for a while, however I was too used to using D-Paint on the Amiga it sempt to be missing all the easy to use functions. Suppose if I learnt how to use it properly I could do the same. But I hate having to do that.
I've just installed Photo Shop 7. It's apparently the best so will have to see how easy it is to use compared to D-Paint. Obvioulsy it will have more features, but ease of use for doing simple stuff is what I'm after to create logo's and text headers etc... I used to follow the tutorials in Amiga Format to learn how to do a few tricks.