Hey I am computer guy and im lookin to do a touch screen in-dash. I looked at 7" screen will this fit in the double din (7 by about 4.5) area or need lil modding? Also since the screen is gonna be were the hu waz am I able to run the speakers off the soundcard on the computer threw like an AUX to and 4 ch amp? Is there sucha thing? Im lookin to proably use the computer to control the volume on the speakers. I waz thinking of gettin like an Audigy Zs USB or and Audigy with an remote to control volume easly. Would this be powerful enought to do threw a 4 channel amp? I waz thinkin I would do a 600 to 850w 4 ch. Is this do able? If anyone can give me some advice and place were to buy that would be great. I know ebay, and mp3car.com. I have the computer pretty much might need to water cool it if I put it in trunk.
This is the screen I waz lookin at. Does this look a lil thick or is it just me?

Thanks