I am building a new website, with the help of a programmer. Can't Solve this Problem

I want, need a directory on the first few pages of the site. when people visit the site, they pick the country they are from, which we have in the form of flags depicting each country we are doing business in.

Once they pick their Country, lets say Canada, they are sent to that countries sub directory, in this case, the Canadian Providences, they pick the Province they want to visit, lets pick Ontario, then the finally pick the city they went to visit in Ontario, lets say Toronto.

This is the frustrating part, where do I get the sub directories, listings of the Provinces in Canada and then the listings of the cities per Province. I have seen these directories all over the place, but when you need them, can not find them.

I want the ones that come in a display box, with the names in alphabetical order and your scroll down to you see the City you want and click on it. When people click on their city of choice, it will direct them to the web site we have for each city. We need these directories for the major English speaking Counties, Canada, the USA, UK and Australia to start with.

Can you help us find these directories. I know they are out there, have seem then, just can't get a handle on them know when we need them.

Any help would be most appreciated .