hi plusangel.
<{d3forum_comment dirname=d3forum forum_id=(number) itemname="id" subject=$title}>
Have you replaced (number) into real number of "forum_id"?
Make a new forum.
And specify the number of the forum.
You can find forum_id in URL.
eg:
XOOPS_URL/modules/d3forum/index.php?forum_id=1
In this case, replace (number) into "1"
"itemname" looks wrong.
Perhaps,
itemname="faqid"
Though I don't know the variable can be used as subject...