Re: New prroject
The first thing would be to check the resolution you are using. Make sure that you are using the native resolution of the TVs you are wanting to display on.
I am not sure about the distance that DVI or HDMI will work via cable. VGA is good up to 120' or so with good quality cables, so I assume they would be the same.
You need something to split the signal for the monitors. If you are using a desktop then adding a graphics card would be the best solution (as you mentioned). There are also external solutions on the market for this, but an internal card would be the best bet as you do not need a high end card for this.
How many screens are you wanting to run, total?
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