Hi Jenn,
The comments number your'e talking about is depending only on a user preference and it can be displayed in various ways (ie. in nexus it's an comment icon which tells you how many comments there are after hovering it). It's a very easy to add thing - just 1 line of code :<?php comments_number(_r('No Comments'), _r('1 Comment'), _r('% Comments')); ?>
That's one of the cases the support forums exist.
If you need any help with placing it in your theme please create a topic in your WordPress Theme forums and we will be more than happy to help you add it.
Jakub