Hello, I can't get my Siemens speedstream 4100 to work,i tried configuring it by using the 192.168.0.1 and all that stuff that is followed. But when im done,i try to use the internet and it doesn't work. My internet service is At&t and whenever i use the internet browser, a at&t thing pops up and i do all this stuff i follow the directions and everything then when im done with that, i open a new browser and the same thing pops up, please help. Thank You!!