Customize Navigation Menus in Buddypress


I'm looking for some help in customizing the order and the names of the menu items in my BuddyPress pages. To be a specific, I'd like to both rename and reorder the navigation tabs for a groups menu. I'm using BuddyPress 1.6.1 and the latest WordPress.

Just to let you know, I've tried a number of things, for instance, the advice from this page:

but it did not work.

Any advice would be appreciated.

Thanks in advance!