No problem, just a side note incase you didn't know.. when you go and set that up since it is POP goto advanced settings under that mail account and make sure u choose whether you want it to delete from server or not..
I don't know how Comcast email works imap or pop im guessing pop like road runner just reading those steps so if you use like Mozilla thunderbird or Outlook some thing like that you might wanna choose to keep mail on server from the iPhone until you delete it it manually via webmail or like if your outlook or something controls it