Hello all First post on here! I have just moved bedroom's in my house and the WiFi strength isn't as good as my old room. My router is in an extension so has to come through an originally external wall. I was looking at buying an AirPort Express to boost my WiFi range, until I went into the Apple store. I was told that to be able to repeat my network I would have to plug an ethernet cable into the back of the Express. I thought I would just be able to plug the AirPort Express into the mains within range of my current router (Sky Broadband router) and it would pick up the signal and repeat it. Am I right or are the Apple guys right? Thanks for any help given!