it was more to be a real strong warning, I don't know how to do it myself, but as implied by others in the thread in:
"Wouldn't recommend messing with these .. "
"You can be opening yourself up to a world of pain"
no one wants to tell you specific steps to take do do it, because they don't want to be responsible for breaking your phone. If you get into something like this, it will be extremely easy to break it, and may even be impossible to fix. It may even happen if you do only what you are trying to do, if something like the phone's usb connection or boot sequence or something is related to the change you make, making it impossible to fix outside of the factory where they wrote the initial software to the chips.
For one thing, I'm looking at the name you gave: AddProgramActivity, it's not AdProgramActivity, that may have nothing to do with Ads at all, but be an essential system file.