[dwh]

It's more complicated now, I'll try to be brief.

In showthread.php
after

$counter=0;

but before

while ($post=$DB_site->fetch_array($posts) and $counter++<$perpage) {

add

$countposts = ($pagenumber-1)*$perpage;

about 8 lines down

BEFORE

  $postbits .= getpostbit($post);

add

  $countposts = $countposts+1;

Close showthread.php.

Open admin/functions.php

Find

function getpostbit($post) {
// sorts through all the stuff to return the postbit template

	// user
	global $bbuserinfo,$ignore;
	// showthread //added $countposts
	global $counter,$firstnew,$sigcache,$highlight,$postid,$forum;

Now add countposts variable to the end like so

function getpostbit($post) {
// sorts through all the stuff to return the postbit template

	// user
	global $bbuserinfo,$ignore;
	// showthread //added $countposts
	global $counter,$firstnew,$sigcache,$highlight,$postid,$forum,$countposts;

Done.