Hi Glen,
I replied to your other post in the "Introduce yourself" thread but I'll copy it here, as it is more appropriate.
Ciderman: I'm new to digital art and i need advice on what programs to buy for
doing it. I know its photoshop but the ones that are availible on
amazon.co.uk look like there for photography rather than artwork but i
may be wrong. If anyone can offer any advice i'd really lke to try
digital art out
Photoshop is mainly for photography but it is so powerful that it
can be used for all sorts of activities especially digital painting -
the Photoshops (CS4, etc) on Amazon are the correct versions.
Here is a list of most digital painting applications, including free software. http://en.wikipedia.org/wiki/List_of_raster_graphics_editors#List
Some of the most popular are: Photoshop, Painter, Artrage, Gimp, Sketchbook Pro, SAI, Dogwaffle and Twisted Brush. Many, if not all, have trial versions and some have free "lite" versions.