I can't explain in full but you need to go into the templates folder and open community header and search for a piece of code i.e: account settings and you copy the code to make that link work and paste it straight after the one you copied. Then you change the link and the link text.
Sorry, I think what I said above for links you want to add under the community tab but surely it would be better to make a new tab which you can do in the same way as above. Like I said tut soon.
EDIT: Oh? It worked then. TUT will be done when I get back on laptop.