Few things that I can tell you in this.
I assume you have two combo boxes first is State (province) & second is city. You want to show the cities in the selected state.
1) Get the initial values for the state,that you can get using some
servlet.
2) Write one javascript function that will create HttpRequest using XMLHttpRequest() activex object , & pass your selected state as a request parameter to the the servlet.
3) This servlet should be able to fetch the cities using the request parameter,should prepare a recordset in the form of a XML file & send it to the client.
4) Your client should interpret this xml using DOM & create the cities on the fly.
how to do this every thing,this information is scattered in this group only.
hope ,this helps.
[ July 04, 2006: Message edited by: Kiran Joshi ]