it seems my macbook pro always connects to the AE that's the extender
i have a new aiport express set up as 'create a wireless network' and an old airport express set up to extend this network (it used to say 'extend wireless network' but it seems after this latest update that is not a choice and it now says 'join wireless network'). the new airport express is sitting on the same desk as my macbook pro but when i go to 'system profile' then 'airport' on my macbook pro, it looks like it's connected to the extended AE. why would that be? it shows it's connected to channel 1, if i scroll down to other networks in system profile it shows the network of the same name but with channel 52, 1. how can i make my macbook connect to the new AE? thanks. if this helps, when i look at the network on airport utility on my iphone 5 it shows internet on top, the new AE right below connected by a solid line, then below that the old AE connected by a dotted line.
Mac OS X (10.6.8), iPhone 5 iOS 6.1