I'm trying to create an Ad-hoc network in Ubuntu [Done] which have a welcome web page.

Kinda like you find for example in an airport when you conect to a open network and the first web you see are the instruction to pay a fortune, but I don't want anything funzy like that, just some text like "I'm sharing this network, please don't abuse" or something like that.

So the adhoc with no key is set up and working, but the other thing I have no idea, I have been searching for a while and I couldn't even find if that process have a proper name :-S