Caption Text Align

I just installed the plugin, and it seems to work perfectly. However, there is one detail I would like to change, if possible. The caption text is aligning center under a photo. I would prefer it to align left. How can I accomplish this?

I am only doing some testing now, but the page on the test site is http://www.gourmetsugarplums.com/test/

The two photos in the center under the introduction text use lightbox. You can see the text alignment issue.

Thank you for the assistance.

Glenn

http://wordpress.org/plugins/wp-jquery-lightbox/