I set up everything o.k, including printers with my new Airport Extreme, but I can't figure out how to have two wireless settings, one for 2.4 and one for 5.0, just like my last router that died. I bought the Airport Extreme because I finally just bought a new iMac which I will get in a few weeks, and my wife has an older iMac. Right now I have the radio mode set to automatic. Is there a way to have just N(5.0) and 2.4(B/G) separate, instead of an all in one. I noticed there is an option on the bottom in the configure manually area for wireless, (Wireless Network options). I clicked on it and saw a place to click 5GH network name. I really don't understand the settings for this: 1.multicast rate 2. Transmit Power 3. WPA Group Timeout 4. Use Wide Channels 5. Create a Closed network. If I click the 5GH Network name, will this give my that separate 5.0 network I want, to make sure my XBOX 360 connects to N and other N devices I have? What are all the other settings and what should they be set to? Thanks.