We've got a Sky ADSL router which we have running a wifi network, and we've got it connected via ethernet to iMac/TV/PS3/etc. As the wifi coverage isn't great upstairs we've bought a Time Capsule which we want to plug in to the ethernet that's connected to the router, and we want to have the Time Capsule provide wifi coverage upstairs.
I've only been able to make this work by having the Time Capsule create a separate wifi network, with its own name & password, which means when you go upstairs you have to manually change networks. What we really want is a single network, but when I try changing the Wireless settings to 'Extend a wireless network' I just can't get it to work -- I end up with the TC flashing its light amber.
Surely this must be possible? Help!