I recently moved and before hand my set up was working perfectly for me: a Time Capsule on an "N-only" network and an old Airport Express in bridge mode for a "G-only" network. My iMac, MacBook, and AppleTV connected really well with the N network and my iPhone and Wii connected seamlessly with the G network. Since I've moved, I've seen the speed and range of both networks decreased significantly. For the G network this isn't much of a problem, the Wii is right next to the router and the iPhone can connect via the cell network. For the N network, I'm having more trouble. While my iMac can still connect to the N network, I rarely get speeds over 1 MB--even when I'm downloading something, Time Machine is backing up wirelessly, and attempting to stream something to the AppleTV. Instead, all three pretty much slow to a halt. My unibody MacBook cannot even connect to the N network, even when it's sitting right next to my iMac. While the distance of the Time Capsule/old Airport Express is not much different from my old place to the new, there are many more walls in the way in the new place, which I'm thinking is what's causing the slow-down and decrease in range. I'm thinking about buying another Airport Express to extend the N network, but I've got a couple of questions: 1) I know this will extend the range of the network, but could it also increase the output to those devices that are currently not downloading/uploading/streaming as quickly? 2) What would be the best way for me to test out the best placement of the new AE? I don't mind doing a little trial and error, but I was wondering the best method for this test. I understand that I need to just try the new AE in different outlets around the house, but what should I be doing to test the speed/range of the network? Thanks for everyone's help! I appreciate the guidance.