This is the firs time I read about Teamspeak. Maybe it's the same thing that I have read about in other posts called "TS" (to speak to each other while online racing). If so, I'm interested in learnig to use it. Do you know if is there any tutorial or any document about it?
Yes, TS is the same as TeamSpeak. Another program that is very similar is Ventrilo, which is what I use. Both programs are basically the same, and you don't really need a tutorial, just a set up guide. All these programs do is connect you to a voice server, you can be playing any game/sim, or just sitting at your computer to talk. You obviously need a mic, and usually a headset is nice. You must connect to an existing server, though, so someone has to tell you what their server info is (for example our ventrilo server is comms.team-hk.com port 4855 ...this will not work for TS, but you need something similar)
The TS guide can be found here in the Menu Connection area:
if you have a stereo mic you can use omnibeam in you sc driver to have directional input and also enable noise suppression and phase filtering if you have them which will cut down what you pick up from speakers. works fine for me but then i have mic set very low.