I've searched the VirtualBox forums but I haven't found the answer to:
What's the best way to be able to read (and write, I suppose) an EXT4 external HDD in Windows XP on VirtualBox?
Note: When I Capture the external HDD into VirtualBox, and then try to read it, I get the message "The disk in drive E is not formatted. Do you want to format it now?" as shown in the attached screenshot.