UrBlog

Wythe asked if I knew anything about tweakage of MT templates, and I really don't. Here are some resources that may be useful:

Illustrated MT templates (Kristen McQuillin)

The MT default templates contain four kinds of code: CSS, HTML, MT tags, and Javascript.
If you're new to all this, you're about to learn that it pays to make a careful study of the code. Once you understand the way it works together, it's pretty easy to modify your MT templates to display almost any design you want.

Movable Type Templates Tutorial (Mark Pilgrim)
How to add a "sidebar" to your blog (Easterwood)
Tweaking Your Blog's Templates with Dreamweaver MX ("Today I'll show you how to import a blog template into Dreamweaver so you can edit it visually.")
Blogging Basics With Movable Type (an online course, with useful freebies. 'Class Readings' says "students only" but the links work...)