Zow. I would love to see some activity on frequencies. Have been working with freqs for awhile now. Everything from hand and feet contact points to wrapping crystals and directing frequencies out... can say from personal experience there is most definitely some very cool things here.
FWIW, here is a software frequency generator that I have used among others. On the first machine, a small netbook, I measured exacting frequencies being generated from the audio output. http://www.frex.com.au/about.html
Anywayz... there are many far more science-y than me on this, but I have developed a ton of practical use and experience from frequencies. Well worth the dipping into....
I hope ya'll's go more into this. Oh, there is a Yahoo group dedicated to the Frex application but there are some quite excellent folks in there talking about all kinds of healing applications.