Yes.

I think you are making it sound tougher than it is. What you basically do is find a file for the year/vehicle that you are working with that DHP opens up w/o complaining about. Make changes..save as a new name and then write it to the car.

Whenever possible have the following in place:
Full laptop battery (DHP will *****)
Charger on car battery, if the car has sat for any amount of time. (DHP can *****)
Spare PCM (DHP can brick, this is the term for f it all up to hell)