CTA Answers only please. Anyone else will have their ears set on fire, because you probably don't know, and I don't need stupid answers.
I've got a Netgear web router (RP114) that I've had for a few years. It's actually been about 18 months since I've used it (and had it work), and the last time I used it was on TW RoadRunner cable internet (which required settings changes for DNS and such - didn't work out of the box). I pulled it back out the other day to connect it to my AT&T DSL - and I get nothing. I know it's a stupid setting that I'm missing (like PPP or PPPoE - which, of course, I never remember). Yes, I reset all the settings changes I had made for RoadRunner.
Things I know about my AT&T DSL:
1) If I connect it to either my computer or my laptop (not at the same time), I get an IP address. The IP address is always different, and is always one away from my gateway address - which means my modem/gateway is getting a new address every time I renew.
2) My modem's physical address is 192.168.0.1. My router's physical address used to be the same thing with DHCP starting at .0.2. I fixed that, but it hasn't helped. (I hope I remember what I left it at so I can change settings on it again...)
3) When I first signed up for it, I got a username (email@example.com) and password, but I don't know how they tie in to the internet service. My laptop, which doesn't have the AT&T software installed like my desktop does, still connects just fine without a username.
4) My IP address does not come with a DNS suffix.
Any help appreciated. I'd like to get it working so I can use it instead of having to buy a new one.