The best software for room testing would be REW. It can be found at hometheatershack.com. You will need an spl meter and a small bevy of cable. No test disc is required since rew has its own tone generator for sweeps. The program has calibration files for the newer analog and digital radioshack spl meter. if you want more accuracy or to run full range sweeps, you would need a proper mic (the rew folks recommend the Behringer ECM8000).
Both hometheatershack.com and audioholics.com have forums for room setup that I have found useful.
Hope this helps.
