How to build bigger led matrix with arduino ...

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Hi!

I have created a patch in max for transforming a video inte ledmatrix and I know want to build a ledmatrix for controlling with arduino.

I got two questions:

  1. How do I connect a 192 rgb-leds led-matrix 12x16 leds in to arduino?

  2. where can I find what I need? what modules and so on do I need?

  3. I only found pretty small led-matrixes (well the sizes of leds smiley ),such as: http://www.electrokit.se/images/40300301.jpg

this one is 6x6 cm. thats the biggest one I found.

but any tips how I can do if I want bigger displays? Im going to have this in exhibition purpose so need something at least 50 x 50 cm

thanks