over 18 only!!

[pelukis]

ok...i know this some where on this forum but i can find it...the vb manual is confusing for a noobie like me.

this is what i want to do:

1. some forum to show up only if they are registered. otherwise they can see
2. forum to show up if they are over 18
3. gender triggered forum......ie. the male cant read/post in the female section

can someone point me in the right direction for no. 1 or write a simple walkthrough!!

thanks