Use this (CardWiper):
http://tiara.datarescue.be/freefiles/cw103.zip
It will completely wipe the card, all images will be lost forever.
Then put the card back in the Olympus camera and format it there.
BUT : If you wish to recover some pictures first (PhotoRescue):
http://www.datarescue.com/photorescue/download_pc.htm
For "Best Practice" with Olympus/SmartMedia, see:
http://www.marshost.com/~rashmun/
The column on the right contains info from Olympus.
That should Mend It!
Steve K, May 2005