I've seen a billion threads on LEDs like where to get them and what size to use etc but could you tell me where to get the power supply from? im heading over to Radio shack tomorrow to try and pick some LED's up but i have no knoweledge about where to purchase the on/off switches etc. does RS have those too? i wanted to order some LEDs off of ebay and i found where but i couldnt find if they also sold the power supplies. thanks!