This theme is a port of Antique Modern by wildleaf from oswd.org. The original theme can be found here:
This theme is fixed width; it supports only the right sidebar or no sidebar (it has slightly different modes if there is no sidebar). As a convenience the contents of the left sidebar are applied to the right.
It's a little funky in Opera for reasons I can't figure out, annoyingly enough.
It does not support a logo; if you want a logo with this theme you'll have to try to put one in manually.
The original theme didn't really have a concent of Drupal's nice menu structure, so the theme has been changed somewhat to compensate for that.
As near as I can tell it supports most of the Drupal core modules, though I didn't test every single thing.
I will probably not do too much maintenance of this theme once I'm done with it, so hopefully everything will just work for you.