raymo,
I apologise for not making it a bit easier. I have found another source to maybe make it easier.
Go here (
http://support-au.canon.com.au/conte...200032305.html) have a look through, it does not say anything about Windows 8.1, but it may still work.
If you are happy to proceed scroll to the bottom of the page, there is a checkbox on the left, the text says "I have read and understood the information above, and wish to download the designated software", click the checkbox and a red download link will appear. Clicking that red link (it says "download") should start the download.
The second link that I gave you (in my original reply) was just there for further information for you. I am sorry if it purely confused you.
I hope this all works.
Cheers
Andrew