Blogger has added 15 new templates to its collection. You can now organise the columns in your template and the size of them.
You can test it out by going to http://draft.blogger.com. Backup your current template first by clicking on Layout, Edit HTML, Download full template.
The new templates will only work with newer versions of Internet Explorer versions (IE7 and above).
Find out more information at http://bloggerindraft.blogspot.com/