Where I can go??? (Score 1)

After came back from work tonight, I was surprised that my cable modem was syncing up again. Tried to set my gateway to DHCP mode and soon the browser leads me the welcome page... I found there is actually nothing informational, for surfing the net, you only need to setup dynamically grabbing a IP address instead of the priveious static one (Look like my static IP is gone now.. :(().

Unfortunately I found I can not go anywhere else, although I can ping anywhere I like. Whenever I fired up the browser, I will go to the anonying Weclome page automatically no matter which address I keyed in... :((

Surprising, I can visit Slashdot.org, of course all the external links don't work. I can only view the post here and the headline inside of Slashdot... It is ok to post something here, but what's the problem? Do I missing anything in the setup? The AT&T phone service is damned, nobody answering it, and hang up directly after you pounch the "1" key.... Help needed.. or information needed... please tell me your experience and the transition...