Blobby

I seem to have a problem with my SD card and WMP10. I use a card writer to transfer video files from my pc to my SD card. As soon as I slot the SD card into the Axim, WMP will appear, tell me that a new card has been inserted and asks me if I want to look for media files. Whatever option I choose, every single time when I switch my pda on the WMP will appear with the same message whilst the SD card has not been taken out. This gets quite annoying after a while. Is there some sort of setting that prevents this or is there some sort of other problem ?