Outlook2k crashes when rules copies file

I have two pc's with the same problem, Outlook is set-up as 'Internet mail'
with one profile, two Internet email mail accounts with two different *pst
files for each. After setting up rules to move mail from the 'Delivered' mail account inbox to the inbox on the second mail account, and mail comes in for the second account outlook freezes. I want to be able to have two mail accounts running at the same time. These are remote pc's that are using pop mail. Is there a way of
getting around this?.