2
Open /modules/system/templates/blocks/system_block_mainmenu.html in your editor, and just place the link to the page you want added to the main menu.
Here is an example:
<table cellspacing="0">
<tr>
<td id="mainmenu">
<a class="menuTop" href="<{$xoops_url}>/"><{$block.lang_home}></a>
<!-- start module menu loop -->
<{foreach item=module from=$block.modules}>
<a class="menuMain" href="<{$xoops_url}>/modules/<{$module.directory}>/"><{$module.name}></a> <{foreach item=sublink from=$module.sublinks}>
<a class="menuSub" href="<{$sublink.url}>"><{$sublink.name}></a>
<{/foreach}>
<{/foreach}>
<!-- end module menu loop -->
<a class="menuMain" href="<{$xoops_url}>/">yourtext</a>
</td> </tr>
</table>
Edit this line
<a class="menuMain" href="<{$xoops_url}>/">yourtext</a> with your url and link text
add as many as you like.
Note: if you call a URL within the XOOPS website it will open within the XOOPS frame. External links open in a new page, not in the XOOPS frame.