Hello Zeno.
Thank you for your help. I did reply to you yesterday to say that I had some success and managed to get a "motion detection" script onto my card, but I cannot see my reply anywhere. Not to worry. I can now see the script on my camera lcd with about ten different settings, but I cannot figure out how to use it. All I have managed to do sofar, has been to take a "still" picture using the shutter release! I have tried trawling the internet ( youtube etc ) for a simple step by step guide to help me. Do you ( or anyone ) know a link that can help me navigate through this part of CHDK on my A460?
David Miles.