Google gave me this:
Comcast High Speed Internet» 1.4 Newsgroups
Q: How do I apply for newsgroup access? (#7302)
A: Comcast does not have their own News Servers, they use Giganews.
You must sign up for this FREE service. To do so...
o Go to »
www.comcast.net
o Login with your primary account info, and click on Member Services.
o In the middle, click the link that says:
- Sign Up for Newsgroups
o Down at the bottom of the page click on the sign up button.
o Enter your Full Name, and the Comcast Primary User Name.
(The Comcast Primary User Name is the usually the first email account that was setup.)
Click the YES's that you agree to the Agree To Policies and then the Enable Account button.
You will receive an email in the Primary account that has an Account name and a password. Also it will include the News Server address.
Use this information with any NNTP client such as Outlook Express (see here for instructions) or Agent.
Also, you can go here.
http://online.comcast.net/giganews/