For those of you who lost your Canon EOS software disk that came with your camera, you can easily install it by downloading the latest Canon EOS Utility (or any other software update) and install the full version by fooling your operating system.
The problem is that Canon software updates won’t update if you don’t have the original version installed but we can easily get around that.
For Windows 7 64-bit (which I have), you can save the following as a .reg file:
Windows Registry Editor Version 5.00
Save it as canon.reg and just open it up to fool your operating system into thinking that those Canon programs are all installed.
Then simply run any Canon EOS software you want to install such as the Canon EOS utility and voila!