My sister has dial up and they are reasonable.
http://www.aaahawk.com/files/pricing.asp
6.95 a month if you sign up for a 1 year plan. The connection speed is decent for dial up and they have given her good service. I am going to switch from OLG to aaahawk to save some green.
The best way to go like it has been stated is a cable modem. One day I will have extra cash left over and get a cable modem. :)