How can I serve all pages on a frame?

[landysaccount]

Hello.

I don't know if this is the right place to ask about this issue, if is not then, please apologize.

I have a small WISP in my town and I would like to offer free internet service at coffee shops, restaurant, and other public places but, this free service will have its limitations: All pages would have an advertisement or promotion on top just like NetZero used to do in the past. I think this is done with frameset but, don't know how to force this for all the pages.

I have a linux gateway that runs squid and would like certain ip addresses (free ones) to view pages with this promo on top or even have pop ups from time to time whichever is easier.

Can you please provide any suggestions?

Thanks in advanced for your help.

[dagon]

this is not a php issue, there are several threads on this on squid specific forums.

[landysaccount]

I don't want to do this with squid... I need to do user authentication and load ads from a database with php and mysql.