What I do is play pink noise (ripped to mp3) from my Rio Car, then use RTA (real-time analyzer) software on my laptop with an external microphone to evaluate frequency response. I can visually see what frequency ranges need correction, and the beauty of a parametric equalizer is that I can adjust the freq, boost/cut, and Q.

This is EXACTLY what I want to do...I have a laptop, but I don't have a good reference system in my apartment to calibrate a mike with...maybe if I used your exact microphone and software and just used your graph, I could duplicate this technique?

What microphone/software do you use?