http://www.icyphoenix.com/viewtopic.php?f=35&t=7789&p=52387#p52387
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spydie
Sat 09 Apr, 2011 15:42

Re: Only First Post Possible To Read For Guests
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should be possible

i think, i´ve seen something in posting php, or was it viewtopic.php, that had to do with the first post check and post sorting, 

adding some code there like : 

IF is not first post and Forum ID = Forum ID
display : false;

ElseIf blahblah

This is no actual code,
It´s just an idea

got to play with this idea a bit further, to actual put some usable code here