Here's what you'll need to make this all work on your own:
* A Macintosh OS X.3 or better (mine is a 20" iMac G5 1.8 Ghz with 768 MB RAM)
* A Copy of Max/MSP +Jitter , v4.5 or newer.
* A DMXUSB-Pro USB <-> DMX Dongle, $150 available from enttec.com
* A DMX-USB Max external available from Olaf Matthes, 10 Euro & PayPal.
* A surplus PC power supply which can deliver 12V @ 6+ Amps. Mine is a Compaq 242907, $15 from weirdstuff.com
* LED Pixels to taste