Using DVI, distance between the Mini and the Monitor?

I'm in the process of setting up an Intel MacMini to be used in conjunction with an LCD TV (with a DVI input) to be used for a continuously-running Keynote presentation in a public place.
I am currently looking to get a 37" LCD Television (the largest size that will fit in the available space). It has yet to be determined where the Mac Mini will be located in relation to the display.
Are there distance -- or other -- limitations I need to be concerned about?

There is considerable difference in quality between VGA and DVI, with DVI giving a sharper image with better defined color and saturation. Much depends on the actual display itself as to whether the differences are very noticeable, but in general terms, it's often as marked as night and day.
As an example, I have a user who has an NEC 1760NX display, hooked up to a mini with a VGA cable. He's had the monitor for a couple of years, always connected via a VGA cable. Last week I replaced the VGA cable with a 6 foot DVI, and as soon as he switched the system on he called me to thank me for giving him a new monitor!
It would be expected that VGA would be less good, even if only because in order to function, a digital signal is converted to analog, pushed down the cable, and then reconverted to digital in the monitor. As would be expected, there is always something lost in the translation! DVI is, on the other hand, digital all the way.
Incidentally, that is also why DVI would not degrade as much over distance as VGA. With DVI all you really have to worry about is the loading of the cable reducing voltage below the threshold of the monitor, or electrical interference allowing spurious alteration to the flow of 1s and 0s. Otherwise, with a digital signal, if it's present at all at the input of the monitor it is exactly what was sent at the output of the system. With VGA, there are far more complex issues, and cable length can affect the signal in far more subtle ways. Capacitive loading can, for example, alter the color balance or luminance of the signal while resistive loading can add noise.
Of the two, DVI is the better choice, and least likely to be adversely affected by distance - assuming good quality cabling of course.

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