Excite@home is more to blame for these problems than ATT@home.
This is because Excite is the one who forced complete and instantaneous shutdown of their whole service, all in a blantant power play for more money in the buyout. They screwed all the @home customers just to get more money for their shareholders. What really bothers me the most is they totally pulled the plug on my @home e-mail address. No forwarding e-mail for one month. No saving of e-mail at all. Just totally wiped it out. For this alone, I think Excite should be taken out and shot. And then the carcass should be dragged through townsquare.
As for getting routers to work and stuff, ATT is never going to actively support you. Their tech support people are always going to blame problems on the customer, ie: you are using a router, than blame their own network problems. Never mind that routers are an inherently safer way for home networks to connect to the internet. ATT would still prefer bare internet connections directly to computers without even the protection of something like Zonealarm, which they would for sure blame for any possible problems that come up. ATT would actually prefer that your computer was completely open and insecure so they could probe around and find out what dastardly deeds you are up to.
BTW, 99% of the time I only have one computer connected to my router. I use it mainly because it is safer that my computer isn't connected directly to the Internet. Occassionly I build and test computers, in which case having the internet connection easily available is nice.