I have a brand new time capsule and two older airport expresses. With my old time capsule I had to manually configure the WDS network, but when I tried to do the same here (and yes the option click does reveal the option of participating in a WDS) the configuration settings never worked. Alternatively, I reverted back to the assistant. I set up the time capsule to "create a network" and went through all the steps (had to avoid the creation of a guest network as that also presented complications further down the line.) Then I went and used the assistant on each of the expresses, selected "join and network" then "expand the network." The assistant then modified the network, the time capsule configurations and the express configurations to work together in WDS (with WPA2 security, which I'd also always had problems with and had to make due with WEP.) That said though, i did have to go through this whole process twice, as the first time, all three devices showed green in the utility, but the expresses were flashing amber. Did nothing different the second time around, it just happened to work. Go figure. These things are such a pain, but when they work, they are rather fantastic.