i was going to use a 5volt power supply with 20 LEDs in parallel (3.2v forward voltage, 20ma) with 100ohm resistors. with the driver (im using them as they have pwm controll) is a constant 800ma current, does that mean id have to run 40 off each one to use all the 800ma or would the resistors take care of it, or is it a case of they are designed for high power LEDs and thats it. sorry if its easy stuff, minds just boggling at the moment. thanks