I am changing my internet connection from cable to ADSL. i already have router and hub. now for ADSL what i have to buy? do i have to buy only ADSL modem or ADSL modem with router attached?and how to configure my LAN with ADSL?do i have to make client server configuration? is peer to peer networking possible with ASDL? because i prefer peer to peer networking rather than client server.

plz help me....

Did you consult your Router's manual?

Are you sure the Router supports DSL? If it does not, you'll need a DSL Modem/Router.

A good DSL Modem will replace your current router and provide all the functions of your old router.

By the way, why are you using a Hub? A good router, of any type, should support multiple LAN connections.