Samsung BlackJack SGH-i607

I use Comcast email and was successful in configuring my Blackjack so that I could receive my Comcast email on my Blackjack. Just a few days ago, I dedided to configure my Outlook 2003 so that I could access my Comcast email thru Outlook. Now, I can no longer access my Comcast email on my Blackjack. I've tried deleting the Comcast POP account and I am not able to. I have also tried to re-register the Comcast POP and when I do, there is no email to access. How can I access my Comcast email on my Blackjack now? Do I have to do away with using Outlook?