[kh99]

You should just be able to edit the newthread template and put in the new fields where you want them, just make sure they're inside the <form> tags. Then create a plugin using hook newthread_post_start and do something like:

PHP Code:

         $vbulletin->input->clean_array_gpc('p', array(
              'saleprice'         => TYPE_NOHTML,
              'price'          => TYPE_NOHTML));

         $pct = intval(($vbulletin->GPC['saleprice']  / $vbulletin->GPC['price']) * 100);
         $vbulletin->GPC['subject'] .= " for " . $vbulletin->GPC['saleprice'] . ", {$pct}% off"; 


(BTW, I haven't actually tried any of this code)