Thank you for your feedbacks. I tried many things but nothing has worked, so far. I checked my EOS software and found that it was the latest version. I formatted my spare CF card on the camera, shot a few pictures using RAW formt (CR2), but neither my software packages (Digital Photo Pro, Raw Shooter Essentials 2005 and ACDSee 8...I checked and confirmed that each of them had the capability to handle RAW file format) would recognize that there were any images on the camera, nor the card reader could register any info on the CF card. I shot pictures using the combined JPG and CR2 formats, but the EOS Capture would recognize only the JPG files and not the CR2 files...the card reader could not read anything on the card (except to say that the card needed to be formatted). I shot pictures using the full JPG format...both the camera and the card reader uploaded fine. I am stumped. I am starting to think that there is something wrong with the software of my camera. I am thinking about taking the camera to the Canon Service Center to have them check it out.