l293dne motor driver problem

Hi guys, I have litlle problem with l293dne.i was making this: http://letsmakerobots.com/node/2074 but it didnt work. i realized when i get 5v to input(pin 2 on l293dne) it does nothing however when it get ground to input it works.did it happen to you? can i fix it?

We need a little more information perhaps - what are the other inputs doing? You realize that for the motor to turn you need to drive one wire high and the other low - so the two inputs for that motor need to be opposite logic levels to produce motion.

i fixed it really easy. i connected 10k resistor from input pins on l293 to ground. i also connected input pins to arduino and it works.