Thanks to some volunteered help and guidance from my nephew Andrew I now have the webcam working on Ubuntu and all seems well, thanks Andrew..
I have also got my scanner working now with the free scanner program, the name of which escapes me right now. In fact it is far better and more stable the windows software that was provided by canon.. !!! I always had problems with it from time time. It was OK for 2 or 3 operations then just locked up but not so with this software.