Setting up Outlook Express accounts in XP

I have just bought a new computer and want to transfer my
old OE settings. On my old system I had two email
addresses (one for me, one for my partner) under two
identities on OE and switched between them using switch
identities. They are both provided by the same ISP under
the same account and I need to provide the same ID and
password to the ISP to log on to each email address.

On XP I want to set up two profiles so my partner and I
can log on to the PC using our own profiles. I have set up
OE to send and receive emails under one of the email
adresses but when using identical settings under the other
profile on XP for the other email address I can't send or
receive emails.

Can anyone help?