HDTV
To connect a mac to an HDTV to output 1080i, 720p or 480i/p (using component video connector) should be easier to figure out, it took me some time, this is what i've learned:
- if you have DVI, get the DVI -> VGA adapter, should have come with your mac, looks like this.
- then you need an Audio Authority VGA to Component Video Converter. You might think you could use this (instructions), but the guys at ATI say it won't work, I haven't tried. Alternately, this box.
- then you'll need DisplayConfigX.
Spend some time digesting the instructions for DisplayConfigX. It works, i've even tried it on the new intel mac mini. (I have yet to verify 1080i, but it doesn't seem like there is anything in the way of that)
I found another hint here.