I've got the following setup: - One Airport Extreme in my living room connected to the internet - One Airport Express next to it for Airtunes (set to join the Airport Extreme's network) - One Airport Express in my study (set to extend the Airport Extreme's network) When I'm in my bedroom (on the far end of my house), my iPhone can barely connect to the Extreme. So that's why I bought another express to extend the network. This works great. But now my iMac (located in my study) is always connecting to this Airport Express. Probably because it is right besides it. The internet speeds are about 10mbps when my iMac is connected through the Express, and 40-45mbps when it is connecting to the Extreme. So the connection to the Airport itself may be better, but the actual internet connection is a lot worse! Is there any way to force my iMac to connect the the Airport Extreme? Or maybe someone has another solution?