Okay,
So I figured out on my own how to make a mobile site out of an Artisteer template.
Basically, I changed the sheet to 100% fluid width, minimum 300 px, one column, got rid of the menu and replaced it with a vertical menu, got rid of most of the blocks or put them under the vertical menu, made everything smaller and simpler. Smaller fonts, got rid of most of the padding except for 3px, made the header shorter, made the vertical menu bars tall enough to press with a finger, etc. My new mobile-friendly site looks great.
So now what? Do I export it as a WordPress theme and then have two installations of WordPress for every website?
Or do I export it as html, use a redirect WordPress plugin, an add an RSS feed?
Hmm...I think I may try html, but would love some feedback anyhow.