A NAT enabled router also allows you to have multiple machines over a single IP address. Many broadband ISP's will only give you one IP address, and a non-static (DHCP) one at that. A NAT enabled router will proxy all your computers requests through that single IP connection.

As for the original question, the act of file sharing takes place on your PC's themselves. The wireless access point and/or router is just a method of connection between your machines...no different from a direct cable as far as sharing is concerned.



[This message has been edited by Pointfreak! (edited 11-07-2002).]