You mean so it only shows threads with no replies? Sure - just change this
Code:
$query = "SELECT thread.lastpost,thread.title,thread.lastposter,thread.replycount,thread.views,user.userid,thread.threadid,thread.forumid$fsel,thread.iconid FROM thread,user$ftitle $wheresql ORDER BY thread.$ob $obdir LIMIT $maxthreads";
to this
Code:
$query = "SELECT thread.lastpost,thread.title,thread.lastposter,thread.replycount,thread.views,user.userid,thread.threadid,thread.forumid$fsel,thread.iconid FROM thread,user$ftitle $wheresql AND thread.replycount=0 ORDER BY thread.$ob $obdir LIMIT $maxthreads";