I am a newbee, but I have loaded the CHDK (ver 796 Bld 0.9.8 sep 4,2009), and I have had some success using the MD script. The problem I am having with my Canon Power shot SX110 IS (firmware ver GM1.00B 6-28-08) with the MDFB-080914 by fudgey script is: If I set it to slow mode to capture birds on a feeder, the LCD shuts off and the camera stops detecting anything, I suspect since it uses the lcd image to detect the change. The longest I can set the camera to have the LCD on seems to be 3 minutes. I have also tried hooking up the video cable with nothing hooked to the other end. That does shut off the LCD but the camera still stops detecting after the 3 minute time period. The problem never occurs in fast mode and the video cable shuts off the display to save power, works great. If only I could get it to work like that in slow mode.
I have not looked into changing the script but I was hoping there must be an easier answer.