I finally got dsl from verizon. I got the Westell model 6100 (DSL2 + Router) modem. I was wondering, since this dsl modem is also a router, it contains i believe a hardware firewall, etc , would the settings of the dsl modem router have conflict if i were to connect it to another router that supports wireless? Also, would it make a difference in speed if i get a better dsl modem?