Thanks, Todd, for the suggestion. But since posting the question I found the book called "Take Back Your Life" which explains all that Outlook can do and how to put it to best use. I love it!
However... Eileen! Your (business) life has been taken ! I'm sitting here getting stressed and nauseous just hearing what you've gone through. What a totally bizarre and terrifying thing to happen. I'm wondering, Should I look to see if my backup is on the disk? But then you said you actually looked at the file and the disk space used on your disk. Parallel universe? Wow, makes you wonder. You had your backup disks as well as your newly purchased backup system? And it wasn't on either! Thank goodness you at least found what you had on your treo. But I'm so sorry for all the years of hard work and effort you've put into structuring your list.
Christy