Are you sure that the stick is correct for the camera? Are you aware that memory dies? It does. Maybe you can find a friend with a compatible stick, so you can "try before you buy." Maybe you could just go get a 128mB stick. They're usually cheap. There's a PDF manual that you can download on this page:
http://www.amazon.com/gp/product/B0001G6UEI/002-3090186-9016032?v=glance&n=502394
Read the manual and MAKE SURE that you are putting the correct type and size of memory into your camera.
...muck
May 2006