If you use WordPress > v3.0 you can add categories to the menu and they appear as a page with all the posts from that category on them.
Have a look at this site of mine which does pretty much the same thing using the method above
http://www.northnottshc.net/
In the News section there are loads of different categories posts but in the sub-menu - Team Selection - is just the team selection category - but these posts appear in the main News section too