I'm having a lot spam posts lately, although not in my forum. I have a guestbook mod installed spammed by bots very often.

(Advanced Guestbook: http://www.phpbb.com/phpBB/viewtopic.php?t=64412)
I'm pretty sure your mod can help avoiding spam in the guestbook, but I don't know how to modify your mod for it, since I don't know php...
In the phpbb support forum I asked for help ( http://www.phpbb.com/phpBB/viewtopic.php?t=349056 ) but they told me to ask the mod autors...
So here I am... could you please find a few minutes to modify your code for use in the Advanced Guestbook?
Many many thx in advance!!