Hi Jim,
Here's my favorite, on the Mac OS: PhotoSite TimeSaviour - free and
fast and you can configure it for different sizes of thumbnails and set
custom background and font colors. See it he
http://www.macupdate.com/info.php/id/6446

And if you need a website with ecommerce designed, here I am at:
http://www.lantana-media.com/

We do sites for artists with small businesses.

- SzeBaiMei