Hi, Below is my set-up. It works, but I'm worried that I should have done it differently to get maximum performance with my hardware. I'd really appreciate someone glancing over it and letting me know whether it seems okay. Cable internet connected wired to modem provided by ISP. Ethernet cable to Airport Extreme (the new one) Intel iMac Core 2 Duo (N enabled by disc included with Airport Extreme) connecting wirelessly: -- Radio Mode: 802.11n (802.11b/g compatible) -- Wireless Security: WPA/WPA2 Personal Airport Express (just used for Airtunes, and nothing else) -- Wireless Mode: Join a wireless network Is the Airport express slowing down my network? I want N speeds (just because I can) and don't need to worry about connecting any other devices (apart from the Airport Express) to the network. Any suggestions much appreciated. Steve.