[MarkFL]

Create a plugin hooked at "memberaction_dropdown" with the following code:

PHP Code:

if (is_member_of($vbulletin->userinfo, array(6,7)))
{
    $template_hook['memberaction_dropdown_items'] .= '<li class="left">
            <a href="usernote.php?u=' . $memberinfo['userid'] . '" class="siteicon_profile">
                User Notes
            </a>
        </li>';
} 


You can adjust the usergroups who will see this link in the first line of the code.