So I just got a 26" LCD TV for my dorm room at school. I would like to plug it into my computer via vga. I'm running 2 nvidia Geforce 8600GT XXX's in SLI and each has 2 dvi outs so I'm set with outputs. I mainly want to do this so I can maybe use my TV as a monitor sometimes, but most likely just to watch DVD's from my computer since I don't have a DVD player. If I have both hooked up at the same time and the TV off, or even the TV on but just watching TV and not using the computer input. Will it use any of my resource from my computer even if nothing is being displayed? Also would I have to change my resolutions to use my comp through the TV for DVD's and will it look any good?