First of all you would need to wait until someone invents a way to play pirate PS3 games, by hacking the PS3, which is apparently very hard. Then you need to invent the program that would burn PS3 games to a disk, then buy a Blu-ray disk burner. Oh, and some blank blu-ray disks as well. Make sure you buy a few because this probably won't work the first time. And make sure you have a spare PS3 handy, because it might break the PS3 during the process.
Should only cost a couple of thousand dollars. Or you could just walk into Wal-mart and pick up a LEGAL copy of Call of Duty 4.
burning ps3 games
how to burn ps3 games