New Multi-Column Layout Integrated into Site

Hi folks,
I just finished up a 1.3a5 theme to allow me to integrate WP smoothly into an existing site with a multi-column layout; I’d be glad for any feedback on how it all integrates together — i.e., how does it look not so much as a WP installation, but as an integrated sub-section of the existing site?
http://counsellingresource.com/features/
If layouts of this general type are of interest to people, I might be able to set aside some time to create something more general for others to use. (No guarantees on quantity of time, but people have been very helpful to me here on the forum, and I sure appreciate the time *they* have spent; so offering some of my own time back to the WP community seems like a good idea to me. SO, if you’d be interested in this sort of layout for your own purposes, please let me know.)
Known niggles:
— Safari doesn’t support min-height, so short posts will have the right-hand column in the main content area slipping down below the edge of the main content area. I’m willing to live with this due to the way I’d like to order content in the page source (which requires absolute positioning for the right-hand column).
— Firefox produces a 1px jog at certain font sizes when using the ‘sliding doors’ technique for liquid box backgrounds. I’ve tried to expunge this by changing where I size text, but to little avail. Oh, well.
— Mac IE sometimes mildly flakes out on its rendering of the sliding doors background for the main content area. Oh, well.
— Because this is integrated into an existing site, there are two totally separate search interfaces for finding content. Bad news. Haven’t decided what to do about that yet.
Many thanks for any thoughts!
Greg