Lance
A quick point: If you create a separate directory and extract your mailbox files in there, then edit the shortcut to Eudora.exe to include a parameter to point to the new path:
Something like
"C:\Program Files\Qualcommm\Eudora Mail\Eudora.exe" C:\Email
then it will use these instead, and it makes backing up the mailbox, contacts/history list and associated attachments very much easier than if it is held with the program files.
Another tip: put EUDORA.INI in there as well and you can have separate setups in different directories - eg perhaps for different ISP mailboxes, or for different users etc.
John