To create that, simply create a custom block. Using the same tags etc. (but different urls) as are used in the Template/system/mainmenu......
Simply copy a few of those..well wait just a moment Ill snatch em up....
ok Here....
<table>
<tr>
<td id="mainmenu">
<a class="menuMain" href="http://www.yoursite.com/modules/wfchannel/index etc.etc.">
About</a>
<a class="menuSub" href="http://www.yoursite.com/modules/wfchannel/">
Support us</a>
<a class="menuSub" href="http://www.yourwebsite/modules/wfchannel/index.php?op=link)">
Link to us!</a> </td></tr></table>
It's the TD and A class that make it appear as the rest of the menu, and will appear based on your css theme.
Choose HTML as the style of block.....
As an alternative (ie:you don't want this in a seperate block)Simply add your urls to the existing template....
Hope that helps!