how can i put send using specified account name in email outlook
 

I just loaded Office 2003 using a complete install onto my new hard drive.
In the past, I added user accounts that are specified in my web server
(comcast highspeed broadband cable modem) email accounts. Now I am not able
to SEND USING showing whatever account name I specify. I added them using
the wizard, named them properly, and tested each one of them without getting
errors, so I am sure that my pop3 and smtp accounts are working. But I am
unable to either RECEIVE only from one of those accounts. And, in addition,
I can see that on SEND/RECEIVE ALL, 11 tasks are complete; however, I only
see 4 emails in my Inbox. Therefore, I am certain that email is sitting
inside of the comcast web server and not sending the messages to my separate
accounts, or even to one of them. Kindly assist, as the MS Outlook answer is
incorrect. Thanks.