xp and msn help

[sarah]

whilst logged in under my user account in xp a friend
logged on through my passport to messenger using her
messenger details. Now for some reason when the first
login screen appears for xp her e-mail unread message
status is also shown on screen, under me user account
logo along with my own e-mail stutus.

I want to remove her listing from this. Can anyone help?

We have already checked that the automatic logon to msn
messenger box is unticked, upon someone elses suggestion.

Please Please can someeone suggest something as this
baffles us!!!!
Thanks :o)