You can "calibrate" (not a real calibration without a colorimeter but it's good enough) your monitor using this. The mp4 version should work well enough for a PC. It's a pretty deep topic but they have a very good instructions PDF and if that doesn't solve your doubts the guys over there are very helpful.

This is also a good starting point, if you rather keep it even simpler.

BTW if you are calibrating a PS3 don't use the mp4, the PS3 doesn't do whiter-than-white or blacker-than-black for standalone files. You need an authored format (DVD, BD, AVCHD).