Find

$posts=$DB_site->query("SELECT post.dateline as dateline,post.postid as postid,post.pagetext as pagetext,post.allowsmilie as allowsmilie,post.signature AS showsignature,post.title as title,post.ipaddress as ipaddress,post.iconid as iconid,post.username as fakename,post.userid as userid,post.pollid as pollid,user.userid as userid,user.email as email,user.username as username,user.usertitle as usertitle,user.signature as signature,user.showemail as showemail,user.homepage as homepage,user.icq as icq,user.aim as aim,user.yahoo as yahoo,user.joindate as joindate,user.posts as posts,user.receivepm as receivepm,user.iconpath as iconpath
FROM post
LEFT JOIN user ON (user.userid = post.userid)
WHERE post.threadid=$threadid AND visible=1
ORDER BY dateline $postorder
LIMIT $limitlower,$perpage");


Just add user.iconpath as iconpath
I have some other hacks installed so do not copy all this line.