thuderbird/alway

monday evening I took my cruzer out of the usb - and obviously did it wrong, since I lost all of my email on thunderbird

I use alway sync n go on 3 computers
1. home computer - thunderbird was set to sync on another location on cruzer
2. office 1 - set to sync on to computer
3. office 2 - set to sync on to computer

when I discovered this happened - I synced on to computer 2 - then realized it was set to sync with cruzer overwriting computer - so no result with thunderbird

went to computer 3 - set to do a 2 way sync - no result to thunderbird

looking at the cruzer, the data in the location I thought I was backing up to only shows 5/21/09 as date, which is the date of sometime around the first backup

at home computer - I cannot find anything labelled thunderbird when I use the search box on vista and ask for anything after 10/12 (last sync on this computer was 10/17)

Is there anyway to recover the e-mails I have had for the last 5 months??
suggestions?? help??
I am a pastor - and started at a new church in May - and have 3 offices because of it - which is why I got the cruzer in the first place