Beware of using TVs as monitors. Overscan and automatic scaling will get you every time!!!
I built a HTPC with Win7 and am using a 720p TV with an HDMI port (converted with a plug to DVI). The problem is that the TV assumes the signal is overscanned, so it cuts off a margin of screen real estate around every edge.
So, I compensate with the Win7 / nVidia overscan settings by adding extra black space, but now, essentially, the TV is truncating and scaling. This doesn't matter much for images, but for text, it is painful. So painful in fact that I can't use it for anything other than watching movies, TV, etc.
The problem is less of an issue with 1080p, but beware. You can always add a tuner card to your PC, but unless your TV specifically allows for 1:1 pixel mapping, I would avoid using TVs as monitors.