OK, updated topic.
Bane:
keep me posted, I'd like to know if it works.
AntiOnline:
right now the hack uses regular vB search features which means that the forums searched are the ones that are available to the user and its usergroup. I have no idea how the usenet hack works and how I could take that into account, and knowing myself and my view on time I'll probably not have the opportunity to investigate it either. I guess you could set the $forumsql variable to contain only the forums you specify, but I'm not quite sure what it'd look like (delimiter-wise) to be honest. I'll investigate.