As long as the xD card was not formatted it is possible to recover the images that were accidently erased or appear to be lost. You can go to the following website link and download an image recovery software program that is free of charge.
http://www.z-a-recovery.com/You want to download a program called Zero Assumption Recovery. It is a very simple program to use and users have had much success in recovering lost images.
Data recovery is a booming industry, and many appropriate services and software can be found by searching regional phone and business directories or the Internet for terms such as "image recovery" or "data recovery".
Olympus does not offer a data-recovery service and does not endorse any vendor that provides this or a similar service or product. In no event shall Olympus be liable for any indirect, incidental, consequential or special damages of any kind (including, without limitation, loss of profits or loss of use) arising from the loss of data due to use of such services or products, whether or not Olympus shall be or should be aware of the possibility of such potential loss or damage.