Question about query syntax

[Robert Basil]

I'm trying to pull the last 3 posts from a few forums and then sort the by the forum's name. Here is what I have so far:

SELECT t.threadid, t.title, t.firstpostid, t.lastpost, f.title as forumtitle, t.replycount, t.postusername, t.postuserid, t.lastposter, t.dateline, t.views, p.pagetext, t.iconid, t.forumid
FROM thread t
LEFT JOIN post p ON p.postid = t.firstpostid
LEFT JOIN forum f ON f.forumid = t.forumid
WHERE t.forumid
IN ( 19, 116 )
AND t.open = '1'
AND t.visible = '1'
ORDER BY forumtitle DESC
LIMIT 0 , 3

The code above only pull 3 total posts from the forums, any ideas on how to pull the last 3 posts from each forum?

Thanks in advance!