I suspect quite a few people are haing this problem, not just the three of us..

And yes, lisfolks, I agree--the questions are about THEIR router, not OUR equipment. It infuriates me, but what can you do? I'm picking the brain of every network person I can find to see if there is a solution out there. So far I've come up empty, but I promise to post anything I find out. 

I tried using the router in the NVG510 this morning, but its garbage. You can only indicate the computer you want to port forward to if you use the presets. If you use a custom port (as I often do for things like SSH so they are not easily found), you cannot indicate the machine to forward the port to. 

And yes, ktalley, my old DSL modem is looking good to me, too. If I can't sort this out and make it workable by Monday, it's going back to AT&T and they can cancel this Uverse account and put me back on DSL. At least it worked the way I needed it to.