need to add usercp content

[moonlightcheese]

i need to add an extra nav option in the usercp and add an additional page for changing user options, which i've added as a table to the database.

i'm assuming i need to change the USER_SHELL template and add some code to profile.php for the additional page... right? what's up with all the $navclass stuff and $session and $vbphrase? do i need to add the info for the new page to an include file somewhere?

i'm completely unfamiliar with vbb... but well-versed in php+mysql.