REVERSE # lookup?

hey i was wondering if anybody has ever bought the software so you can reverse look up peoples cell phone numbers? if so i have one i need looked up.

i know there are plenty of places on the web thatll do it but they charge like 50$ and more.

and all the free ones only do home numbers.

so if anybodys got the software hit me up.. and if you dont wanna post that youve got it.. IM me please... itll help me out tremendesly.