Sohcrates is right, but......
I had some problems, and the email settings the guys who set me up gave me did not work...I think it differs depending on where you are....
I will say that Adelphia's tech support, which is toll free and 24 hours a day, were very helpful...
Adelphia's biggest problem is that their newsgroup servers are HORRIBLE!! Any big file will be incomplete...I had to go to Usenet.net and get an account there.....