Importing MS 'dbx' files into Red Hat Linux MUA

Hi all :

I am running the risk of being overly optimistic here , but I wonder if
anyone knows
of a tool that will allow me to import Outlook express database files into
any of Red Hat
Linux's mail programs , so that when I convert to Limux from Windows I don't
lose any
of my existing email messages.

Any ideas ?

Any help or advice will be much appreciated :)

Regards , Jason