Overscan. Bugger.

Ok lets start with my n00b questions!

Do any TVs allow me to turn off overscan? Or is it pretty much a gamble? Is it a case of taking a pc to the shop and saying "can I plug this in?"

Is the refresh rate something I need to consider? Will a tv have a different refresh rate depending on how its connected i.e. VGA, DVI, HDMI, antenna?

The shuttle system I linked has a pretty good graphics card - is there something that could be done to overcome overscan there?

Cris, you mentioned VGA has no overscan issues. Can I view hidef DVDs over VGA? Or is that laughable?

Thanks for all the help/input.