You could do this: edit the navbar template and add the part in red (this section is at the very top of the template code):
Code:
<div id="navbar" class="navbar">
<ul id="navtabs" class="navtabs floatcontainer<vb:if condition="$show['member'] AND $notifications_total"> notify</vb:if>">
{vb:raw template_hook.navtab_start}
<vb:if condition="!$vboptions['selectednavtab'] AND THIS_SCRIPT != 'search'">
<li><a class="navtab" href="bbmatrix.net">Home</a></li>
<li class="selected"><a class="navtab" href="{vb:link forumhome}">{vb:rawphrase forum}</a>