open source forum software with adsense plugin

hi there,

i'm looking at setting up forum for me webpage on a different subdomain, probably http://forum.yourhowto.org or something like that, so i'm looking for some open source forum software like phpbb or something with a adsense plugin, like mambo has, something that will make a post with an adsense ad in it, or just anything really that wont break the google adsense policies.

any idea's?

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