If I understand the question(s) right, I think you are missing it.
I'll try and explain.
Here's what I do upon each visit to the forums:
1 - Go to the Forum main page
http://www.rc-monster.com/forum/
2 - Click the link that reads ">> View New Posts <<". This is in the Quick Stats section right below the Jato ad.
2a - You should now see the list of threads that are new and any pre-existing threads that have new replies in them.
3 - Click the little icon immediately to the left of the thread link (the icon looks like 3 tiny squares arranged to look like a down arrow). If you hover your pointer over it for a moment, you'll see it pops up a tag that reads "Go to first new post".
4 - Once you read the new posts, use your browser's Back button (or the backspace key on the keyboard) to go back to the list of new posts. You should now be back at 2a.
4a - If you added your own reply to a post after reading one, to go back to the list of new posts you can click the little drop-down arrow to the right of your browser's Back button (Internet Explorer is what I use) and choose the most recent "RC-Monster Forums - Search Results" page to go back to.
Lather, rinse, repeat...
Hope that helps :)