Oldie but goodie that I must re-read now that I have a MovableType blog hence the re-post. The CSS and JavaScript and HTML stuff apply to Blogware blogs too. Only the template stuff differs. But once you have figured out one templating system, the second and third and fourth :-) (I think this is the about the 5th or 6th blog templating system that I have learned) comes easier.

From mediatinker.com:

QUOTE

Tackling Movable Type templates and CSS for the first time can be daunting. 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.

UNQUOTE