Outlook send/receive problem

[Nerka]

I have new Dell computer with Office 2003. I set up my
earthlink account to work with Outlook, but my test
emails just sit in outbox and I cannot receive email. I
get the message "an object cannot be found" when trying
to send emails stuck in outbox. I have contacted 3 techs
at Earthlink, who claims its an MS problem. I
reinstalled Office twice & downloaded all Office and XP
updates. Help!