Quick question: I want to add links to my menu. What file do I have to edit?
You mean in the header?? Header template in the ACP...
my header template just has
<div id="container">
<a name="top" id="top"></a>
<div id="header">
<div class="logo"><a href="{$mybb->settings['bburl']}/index.php"><img src="{$theme['logo']}" alt="{$mybb->settings['bbname']}" title="{$mybb->settings['bbname']}" /></a></div>
{$welcomeblock}
</div>
<div id="content">
{$pm_notice}
{$bannedwarning}
{$bbclosedwarning}
{$unreadreports}
<navigation>
<br />
You'll need the header_welcomeblock_member template then.