UPDATE: a new, improved version of this post is available here: http://www.divydovy.com/2011/07/cufon-for-thematic-with-no-plugins-improved/
Remember that any hover statements need to come FIRST, as described here.
Just copy and paste all that into your child theme's functions.php, then add the JS files to the right folder in your child theme.This worked straight away for me and seems simple and lightweight. No reliance on plugins that'll need to be updated (even when you can get them to work)!
If this helps, leave me a comment. It'll encourage me to post more juicy Thematic functions...