Hi
hedley
Welcome to Tech Support Guy Forums!
Yes, you can save the .dbx files as backups. These would then need to be added back into Outlook Express to view the individual messages themselves.
If you would like to save the messages separately where you can pick and choose which message you want to view, you can drag the individual messages into a folder outside of Outlook Express. Naming is a factor since you cannot have two e-mail files with the same name outside of Outlook Express.
Or you can buy a program such as DBXpress:
http://www.oehelp.com/ which will extract the individual messages from the .dbx file all at once and it will name the e-mails in sequence to avoid file name duplication.
Post a link to the site containing the video, please.