Use plugin short codes in theme "site intro"

I'm trying to use the WP Post Columns plugin to make multiple text columns on the Site Intro of the Dixie Theme. It uses the [column...] [/column] short codes to create columns. It works great in regular posts and pages. It doesn't seem to work for the Site Intro page. I've even copy/pasted code from another page that works to no-avail. Any suggestions? A plugin that will help?
Chuck S.