Error message in Outlook Express and cannot login to hotmail account

Hi all,
I am using Windows XP. I have updated my Outlook Express from 5.x to 6.x. But I am facing a message while trying to start up Outlook Express 6:
“Msimn caused an exception C0000006h in module Directdb.dll”
Also, I cannot log in to my Hotmail account. Please help me.
Thank you!
