I am looking forward to watching tv from my iMac ( 2.16 C2D 1 GB memory) and i am interested in buying Eyetv 310. Atm I have cable tv at home and soon , in a year or so, well go over to digital tv. So, i was wondering if The eyetv 310 was able to work with them both ( not simultaneously ofc,) and also, can someone explain what it can really do, and like why it is better also from the 250+ eyetv. As i was at their homepage, there were all kinds of different things written about like DVB-S and things, but i dont really know waht that even is. So can someone explain it to me, in a more human, not so proffessional talk.