2 domains, 2 licences but some shared forums
 

I've got two brands each with vbulletin installed. For some things, like announcents and general chat type forums I'd like to double up but for some brand-specific sections I'd like to restrict viewing to the appropriate domain.

I understand that this might well be possible, certainly seperate skins are. I have two licences but how would I go about achieving this please?

I can see that forum permissions for members would be the answer. What about guests?

I'm not too bothered if there was a chink in the merge so long as it was not confusing.

Thanks in advance for any help you can give,

Jon