If you were to log in, you'd be able to get more information on your fellow community member.
Katy (and Philip, and all),
I find that GIMP does everything that I used to do in PhotoShop. Some of the things I do using GIMP now, I couldn't do in photoshop.
It's marvellous for cleaning up scans---see here for one of my favourite features (only in 1.1 or later).
If only people would stop emailing me MS-word documents, I could be totally free of Microsoftware.