The Canon SD1200 comes with a SD memory card. Take it out and stick it into the memory card reader in your computer. If you have an older computer without a card reader, you can get an inexpensive reader at many places. Where I live, $5-10 at a local discount store will buy a reader.
The camera should have come with a cord that connects the camera to the USB port in the computer. If you plug it in, then turn on the camera, a wizard should open up and prompt you with what to do next...just follow the guide.