I stay in a double story. My Imac and Time Capsule are upstairs. I bought a Airport Express hoping I could extend the wireless network to down stairs - no such luck. The Time Capsule signal can't transfer through the slab.
So I've run a cat 5 cable downstairs. If I connect it to the AE and TC things go MAL! I loose my internet connection and cant seem to access my AE to change its settings.
Any ideas if this even possible? If so how do I do it?

So I've run a cat 5 cable downstairs. If I connect it to the AE and TC things go MAL! I loose my internet connection and cant seem to access my AE to change its settings.
Any ideas if this even possible? If so how do I do it?