Use this code I just whipped up for you
Edit navbar template (
AdminCP >> Styles + Templates >> Edit Templates (of style) >> Navigation / Breadcrumb Templates). Find this code:
Code:
<td><input type="submit" class="button" value="$vbphrase[log_in]" tabindex="104" title="$vbphrase[enter_username_to_login_or_register]" accesskey="s" /></td>
</tr>
Below that, add this between the </tr> and </table> tags:
Code:
<tr>
<td class="vbmenu_control" colspan="3"><if condition="is_member_of($bbuserinfo, 1)">Did you forget your password? <a href="login.php?do=lostpw">Reset it here</a></if></td>
</tr>