I travel all over the world since I retired from SmoothWall.
NYCWireless.net in New York has a captive page for login on dhcp, Cometa
in McDonalds (free wireless now with a breakfast in every NYC
McDonalds that is equipped or $3 an hr), again captive page.
It's entirely sensible. What Monowall should have is a SEPERATE
firewalled DHCP range anyway with a captive page, if it did its very
very very cool.
You have my support and I will also donate wireless gear to help too as
much as you need. I have recently been working with Sputnik
(www.sputnik.com) and I have one of their APs thats $180 and does
exactly what we are talking about.