Sharing a DSL connection on a network

I have a DSL connection hooked up to a WIN NT SERVER. HOW CAN I SHARE THIS CONNECTION WITH 5 OTHER PC’S? I HEARD I NEED A DSL ROUTER. IF THAT IS TRUE DO I NEED TO USE A CROSSOVER CABLE GOING FROM THE DSL MODEM TO THE ROUTER OR CAN I USE REGULAR PATCH CABLE?
HOW CAN I MAKE ALL THIS WORK??

THANKS FOR YOUR HELP