[Andreas]

Nice one, although I wrote that myself about half a year ago (with ability to sort by thread creation date)

Adding sorting should be fairly straightforward:

In Template FORUMDISPLAY

REPLACE

<td class="thead" align="center" nowrap="nowrap"><span style="white-space:nowrap">$vbphrase[date_creation]</a></span></td>

WITH

<td class="thead" align="center" nowrap="nowrap"><span style="white-space:nowrap"><a href="$sorturl&amp;order=asc&amp;sort=threadstarted">$vbphrase[date_creation]</a> $sortarrow[threadstarted]</span></td>

In forumdisplay.php FIND

PHP Code:

case 'postusername':
        $sqlsortfield = $sortfield;
        break; 


BELOW that ADD

PHP Code:

case 'threadstarted':
        $sqlsortfield = 'thread.dateline';
        break; 


That's it (at least if I remeber correctly).