A DSL modem. At least you can't buy one at Radio Shack, Target, Best Buy, Office Depot, Ultimate Electronics, 7-11, Barnes & Noble. You can buy one from AT&T but it would only be the same sucky piece of trash that only lasted a year.
So I stumbled into Staples and $97 later I stumbled out with a DSL Modem/Wireless-N router combo.
Sheesh. But I'm back up & running.