HEEEEELLLLLLPPPPPP

One machine has Outlook Express 2002 and another machine has the latest
version of Outlook Express (I cannot remember the version). Both email
databases have a number of emails already in them. How do I simply get
the emails from the Outlook Express 2002 database to the latest version
without overwriting emails in the target.

These machines are not networked together.
Most of these emails have attachments.
Ideally I would like to preserve folders, but this is more of a nice to
have.

I tried in vain to transfer via a hotmail account.