subscribing to forums

When I click "User CP" at the top of the page I see a "Subscribed Forums" field saying "You are not subscribed to any forums at the moment". I would like to susbscribe to some low-volume forums (Solaris and *BSD) so that I can receive email notification whenever a new post is made there. Is that possible?

At the bottom of each forum, I will use this one as an example, there is a button called "new thread". Below that are 2 links. The first one is called "Subscribe to this Forum". That is the one you want.

Thank you. I missed that one.