Yes. That's how Ben Heckendorn did it. Much easier than designing your own ultrasonic sender and receiver.
thanks 
so on the transmitter i just need to worry about sending the pulse and in reciever only about looking at echo pin r8? hopefully i could get my hands on rangefinder here in india
Some sensors allow you to only ping or only listen.
The SRF02 from Devantech is one, I think.
thanks for the info my friend,i`l look into it