If your computer monitor is not capable of the resolution your trying to achieve it won't be an option. A 1080i tv will generally also provide 720p, which is where HD starts.

I would think you could get a convertor for your video card to get to component, then you should be able to hook up to your tv.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85