From the Canon website.
" No drivers are available for this selection. This operating system may not require a driver or, in the case of older operating systems, may no longer be supported. "
When you connect the camera does it show up under Start > Computer? If so click on the icon for the camera and see if you can get to the picture files. If so you will be able to right click the picture files and Copy > Paste or Cut > Paste the pictures from the camera to your computer.