[Chealion]

Ohenri - I'm using a MR814v2 Netgear router with Airport Extreme and it works flawlessly when the Dell isn't turned on (see some other threads about wireless routers in the Mac Help & Troubleshooting forum and the Anything Mac area also).

Apple's implementation of some WiFi features is a little weird, but you just have to know what you are supposed to enter and where.