I have put my camera's memory card into the computer slot and it does not pop up under "my computer." I am running VISTA and while I know that things need to be run as an administrator, I can't see how to do that with this.
Are you sure the card reader on your pc is working, these days a lot of printers have a card reader built in, do you have one that you can try. If your camera came with a usb cable try that.