Outlook Express Tips and Tricks for Importing Mail and Contacts
We're not going to say anything bad about that other email program... your old email program. A few words on how to get the emails, contacts and other data out of the old client and into Outlook Express shall suffice.
How to Export Mail from Thunderbird to Outlook Express and Other Email
Migrate all your mail from Mozilla Thunderbird to Outlook Express, from where you can further export it to other email programs, if necessary.
How to Import Your IncrediMail Contacts Into the Outlook Express Address Book
Take your friends and contacts with you as you move from IncrediMail to Outlook Express.