Well, thank you both for your help, you guys are great ! :-)
I will be evaluating the software and let you know the results - so far there is only one small issue, the moment I connect 60D with computer via USB it goes from liveview into default state - I hoped it would stay in liveview so mirror would be in up position and not introducing vibrations..
The scripting is so easy with STEPnC
In case 400D is not working with new software version, I still have the old one (2.8.11).
But, 400D still works OK, as far as I can see. (except when mirror lock-up is enabled.. but this was not working before anyway, so no worries)