logic analyzer using usb 6009

i am having 4 LEDs which are flashing in sequence to the decade counter. i want to observe the flashing sequence of these LEDs on LabVIEW using usb6009 such as 0000, 0001, 0010, 0011 and so on...

how can i view them on a digital waveform graph...making it a simple logic analyzer... please help..