a little known japanese-based program is "Mobile Atelier". As both a traditional wet-media artist and also a digital artist, I've found this little program to be the coolest art/graphics program for the pocket pc.
I tried the demo version of Conduits Pocket Artist and was impressed by it's similarities to Adobe Photoshop but feel Mobile Atelier provides a better experience for the pocket pc platform.
give it a try... they even offer a freeware version to get started with.
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