I'm an artist, been a cartoonist and also do 3d games. I would be interested to see what you have to offer but more details are needed.
I can say as an artist, that the art side takes time and without something that looks concrete and marketable it would be very hard to investigate/invest further when there are so many projects out there looking for talent.
The biggest problem you'll encounter while looking for "help" will be the relationship between you and said artist. This is what is most important, trust to say it bluntly and that takes time.
Regardless, please elaborate as much as possible without giving your idea away also your world location would help. Just my 2 cents. Wish you the best of luck with you company/project hope to hear more about it. <img src="smileys/smiley1.gif" border="0" align="middle" />