NoCat or NoCatAuth? for Cafe'

I'm going to set up a "free" wireless AP for a friends
cafe. My netowrking / wifi knowledge is so/so. I'm a
DBA so i let the networking guys take care of things
:). 

I want to set up a Cafe that brings up a splash screen
and an EULA (are there any good ones i can paste in?)
I'm not to worried about squatters as there are no
outlets in the front of the store, so i'll give laptop
users an hour before their battery dies.

Is it possible just have a password printed on the my
receipt and when the splash screen comes up they type
it in. I'll change the pass like once a week to keep
people honest. And can i turn off the wifi when the
store is closed?

What ports do you say to block? 25 for mail anything
else?

Can this just be done through the router only?

anyone try this with VMWARE?

Sorry for the many questions but i'm curious and
excited about nocatsplash. i'll set up my WRT54G at
home tonight and start playing



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