I just received the ledwiz yesterday and went to set it up today. i have wired in only 8 leds that i bought from groovygamegear (and am using the resistors included) and i get no light. i have been running the leds off a 5 volt pc power supply lead so i know the lights work. windows recognizes the ledwiz but i get no lighting when using ledblinky or when using the ledwiz.zip software. everything is wired like in figure 3 in the directions. what am i doing wrong?