While I have had nothing but success with my 2Wire 1800HG Wireless Router, I cannot say the same about the bundled A/C power adapter. It’s a 6V 2000mA converter, which is impossible to find a replacement for. Even 2Wire themselves no longer stock the replacement items.
Luckily, I have an older 1000SW (Wireless-B) Router from 2Wire, so I have plugged that into the equation.  This restored internet access, and provides basic wireless “b” service, but the effective radius of service is about two-thirds of what we used to have with “hyper-G” service.  Also, the older router does not provide “IPSEC Passthru” capabilities, so VPN is dead in the water…