I was never able to get Comcast to work. So, I got a gmail account and I just forward all of my comcast.net email to gmail (and then delete from Comcast) and use gmail exclusively for personal email. With BIS 2.0, gmail integration is pretty nice, or, if you prefer, you can go to
http://www.google.com/ig/mobile and view your email whenever you'd like. Default will be text (like WAP), but you can also switch over to html.