I don't need to control the LEDs individually. Just two rails of fifty each connected in parallel. I found this schematic Arduino Playground - HomePage
On this thread: http://forum.arduino.cc/index.php/topic,15683.0.html
On the third response the poster suggests it's possible to control fifty LEDs at once using a TIP102 with a small heatsink. The schematic shows a 5v rail, which I would feel comfortable running on someone's skin, but are you suggesting that the amount of LEDs I want to light up would require too much voltage to be safe? These would be surface mount 1206 LEDs.
