X number of posts for Forum Access

[grains]

Is there a way that we can set forum access by the number of posts that a user MUST have?

X Number of posts to access a Forum

Thanks in Advance

[Zachery]

Yes, use the builtin promotion system and secondary usergroups.
http://www.vbulletin.com/docs/html/usergroup_promotions

Of course if you want to make things harder, you can always add a hack that will be subpar.