Thanee
First Post
I make the maps in Maptool, and using Paint (how basic is that), I need to get hold of photoshop, and then work out how to use it...
Take a look at GIMP. It's awesome and it's free.
Plenty tutorials on how to use it on the web, too.

GIMP - The GNU Image Manipulation Program
GIMP - Windows installers
Bye
Thanee