The final way to move photos from your memory card to your computer is the old-fashioned way: manually dragging and dropping the files from one window on your computer to another. The procedure works pretty much the same whether you’re using a Mac or a PC.
Remove the Compact Flash card from the EOS 40D and insert it in your memory card reader.
Using Windows Explorer, My Computer, or your Mac desktop, open the icon representing the memory card, which appears on your desktop as just another disk drive.
Open a second window representing the folder on your computer that you want to use as the destination for the files you are copying or moving.
Drag and drop the files from the Compact Flash card window to the folder ...