If I register and get the file, and then I get a new pc, can i put the file on the new pc after ive completely destroyed old PC? Or will it say "OMG YOUVE BEEN BAD UR GONNA B SORRY M8" and then kill me?

yes.

yes he'll die, or yes it'll work?

If you to register for each copy of Soldat, so yes, it'll kill you..