Thanks for the replies. Basically I'm wanting 2 seperate wireless networks. One that will work with just my old g and super g devices and another that will work with just my N devices without having to buy another router. I have a dlink 4300 that is my main router and a freebee Linksys wrt160n v3 flashed with dd-wrt that is just laying around.
My setup now is as follows
Road runner service
Motorola surfboard cable modem
DGL-4300
from the 4300 I have 2 desktops plugged in, 1 slingbox, and one 5 port switch
Ports used on the switch are as follows: 1 from router, 1 HR-20 Direct tv DVR, 1 BluRay player, 1 HD DVD player, 1 Vonage adapter/router
I also have a desktop connected to the tv which is plugged into the Vonage adapter/router.
I have a couple of g/super g equipped laptops and a number of N laptops plus an N equipped xbox 360 slim. I would like to incorporate the N router into the system for the N equipped laptops/xbox, but I would also like to be able to use the the N routers wired ports as I could use some extra wired ports.