Hey guys... I'm actually a sign artist by trade, but I've started venturing into Flash lately:
http://www.signmaildesign.com
and
http://www.gtgdesign.com
Anyway, I had allot of vector images and cartoons that I had illustrated by hand in the past for other projects and converted to vector. Now I'm giving them away free on my site. Each image is saved as Illustrator EPS version 3 for maximum comptibility. Each image is of course completely vector -- no gradients or weird lines and colors are pre-separated. Check them out, maybe there's something you can use...
http://www.letterheadfonts.com/clipart.shtml
--Chuck