Follow these steps to backup the “Block Senders” list in Outlook Express:

1. From the Desktop, click Start then Run.
2. In the Open box, type regedit then OK.
3. Locate and click the following registry subkey:
4. HKEY CURRENT USER\Identities\(Identity Number)\Software\Microsoft\Outlook Express\5.0\Block Senders
5. Go to the Registry menu and select Export Registry File.
6. From the Save In box, change the location to your desktop.
7. At the File Name box, type “Blocked Senders[date].reg” then Save.
8. Go to the Registry menu and chose exit.

To restore a backup, simply right-click on the “Blocked Senders[date].reg” file that you wish to restore and select “merge.”