Hi Biggs.
You can of course copy SENT items but that a grind. Best way I have found to use Seagate backup via Start / Accessories / System tools / then Back Up. Make a new job and select Outlook Express from the 'C' Drive (?)
Name the file and thats it.
You can also do a floppy or other from Windows Explorer, again by selecting OE.
Only way I know, do it all the time, and its fine.
Someone else might have better idea, so I'll watch too.