Is anyone using the DVI outout on the SONY GRAND WEGA for HDTV or DVD?I'm more interested in what HDTV looks like through DVI but would also like to know what DVD looks like through DVI?I am thinking of getting a DVI cable just because eventually I'll need one and I heard cablevision is going to activate the DVI on the SA 4200HD box soon?So heres the big question how much of a difference does it make?Thanks J.H.