WHoooooHOOOOO!!!! I FIGURED IT OUT!
Ok - to see posts that have recent updates on them (all of them....)
Click on the forum header (be on the page that lists all the main forums)
At the bottom of the page there is a link for RSS feeds. Click that.
That gives you a list of the forums and blogs and events. You have to click on each header that you want. I added what I wanted on the Google reader (need to have a google account though.) Now I know which forum has an update or new add.
Sorry if you already knew this. I was struggling to figure this out.
I'm good now.... thank you for listening.