Well, here it is almost June 2008, and I'm quite satisfied with mine replacements for ZA7.
A nice little router, and a free ware firewall, "PC Tools Firewall Plus".
All the problems are gone, and all of you can just keep ZA7, 6, 8, 29 ... what ever you like.
ZA has permanently lost a customer, and that's a fact. Perhaps, had they ever answered any of mine EMails, I'd have tried harder to make it work properly, but then again ... why?
Anyway, it's gone, and I am satisfied.