[Theme: Blueprint Theme] comment on a page in blueprint theme

Hello,
On this website, http://www.kinefleurdevie.ch/, i need to create a page that would be the “goldenbook”.
I want to use the comments to allow people to leave a comment.
Easy? well, the theme i use is the Blueprint theme but i cant find the way to make the comments appear at the bottom of the page.

Could someone help me with that?
Maybe one of you had the same problem…

Thank sin advance.
Sandro

http://wordpress.org/extend/themes/blueprint-theme/