After picking up two USB-Ethernet adapters for the TiVos (both of which sit in the living room, since that’s the only place there’s a cable hookup in this joint), I am now enjoying the world of WPA-PSK wireless security with AES encryption.
Figuring out how to do this with my funky bridged network (using WDS) was a bit of a chore. What seems to work: put the routers (one Linksys WRT 54G, one Linksys WRT 54GS, both running DD-WRT firmware) in WDS mode, WPA-PSK Shared Key Only with AES encryption, and set them for Wireless-G only. It doesn’t seem to work in WPA2 mode, nor in Mixed B/G mode.