References:

Backup & Restore OE Data
http://www.insideoe.com/backup/index.htm
http://www.oehelp.com/backup.aspx

OE Files & Settings
http://www.insideoe.com/files/index.htm

OE Registry Keys
http://www.insideoe.com/files/regkeys.htm

Importing OE Data (all DBX files, including Folders.dbx)
http://www.insideoe.com/faqs/how.htm#importOE5

Importing a single DBX file
http://www.insideoe.com/faqs/how.htm#importdbx
http://www.oehelp.com/backup.aspx (last paragraph)

Using WinXP's FAST Wizard, by MVP Gary Woodruff
(Please read the caveats about Outlook Express)
http://aumha.org/win5/a/fast.htm
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE/OE, Shell/User, Security), Aumha.org VSOP, DTS-L.org

Brett wrote:
I saved messages to my desktop and a CD-R and am now trying to import back
into my OE. I keep getting a message saying "not a valid Win32
application". I have tried importing and and received some of my message
but not the individual files that contain around 50 to 100 messages. I
appreciate any help.