OK, it must be on the side - anyway, when you plug in your SD card, you get no indication at all that anything is happening ? It should appear in the my computer window as a new drive letter - if not, go to start, control panel, add hardware, start the wizard and let it find any new hardware (do this with the card still in the drive). Hopefully it should find the device and automatically install it. If not, can you make sure your SD card has not become corrupted or something crazy like that by trying it somewhere else e.g. camera, etc. Let me know if any success.