Not sure exactly what your after but ebay's got alot of peeps selling custom edible images, here's a link for one:
http://cgi.ebay.com/Your-Own-Custom-Edible-Image-for-Round-Cakes-7-5_W0QQitemZ360018373961QQihZ023QQcategoryZ3207QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
HTH 
The way I've done the purses in my pictures is very simple. I worked in Power point, inserted the file with the logo and kind of made the whole page full of little logos, and then selected all of them, and saved them as a picture, which I could not upload here because it was too big. I imported the picture into the Kopykake program and that was it. If you send me a PM with your email address, I could send you the finished picture tomorrow after work, or you can try doing it yourself, it is really not hard. HTH
this is a great idea, didn't know you could do such!
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