Please fishin, could you or anyone e-mail me the hack to disable regions and macrovision on sony DVP-NS315 ?
In a word, "NO". There is so far as I'm aware no software-only hack for that unit, or for that matter most if not all current or recent production Sony players. Along with a software change, they require a firmware revision flash, a different main processor chip, and some circuitboard modifications. While of course Sony players can be "hacked" by experienced, competent technicians, anyone needing to ask how to do it most likely is unequipped to do it.
Oh, and if you do manage to gather the hardware, firmware, software, and instructions, be advised that if you screw up, you're likely to wind up with a paperweight that serves as a retractable cupholder and, if you're real lucky, lights up.