Well, thanks for the replies and for pointing me in this direction. Shame on me for not seeing it! I've done lots of
PS work on photo enhancement, although I have been concentrating on PSPx. As I got interested in Photo-art (stimulated in large part by the tutorials and examples using Deep Paint (Photomaster), I naturally went off in that direction. Did I look further into
PS for these capabilities? Nooooo.
All this capability right under my nose....amazing. The tutorial links by Danny, which I had also missed, show everything you need to get started.
After some further learning and experimentation, maybe I will be able to see where something like Deep Paint comes in relative to the native abilities in PS7.
Many thanks for the responses.
Ken