Thanks.
I'm using Toshiba Satellite Pro L670 (4GB RAM, i3, HD5650) notebook which should be OK for non-HD streaming but the last time I used it the stream was choppy as hell. Maybe that was because of my noname TV USB box or the upload speed, but I guess that a few Mbs should be enough.
Do you know if Furzy uses it for streaming or only for recording? As for the latter, I've seen that the video on his Mac has around 2 seconds of lag when compared to the TV.
At the moment I'm using a camcorder connected to a TV card (I bought a new one).
As for the software, VR-Fist also recommended me XSplit so I'm definitely going to give it a try.