looking for a plugin that will allow me to do comments, link to post, email friend

Hi I'd like to duplicate something like this site.
http://erinelizabeth.com.au/blog/index.php/recent-work/
If you look at the end of each post there is an add a comment, link to this post, and email a friend buttons. I'd like to do something similar to that. Could I use the Comments plugin from wpmudev? And if so how would I go by accomplishing that?
Thanks,
Brian