Attatch a push button to send SMS with Arduino and GSM

Sorry for noob qu. I'm new with this,
How I can attatch a push button which will send sms to given mobile no.?
Actually I'm working on a project where I need to add a small push button. After pressing this push button GSM will send sms to destination no. I just want to know where should I connect the wires of that push button? To GSM kit or to Arduino UNO kit?
Thanks For Your Help!

Actually there is a video that will explain you what I want. Smart Cane Video

hii

im doing the same thing that your trying to do sending sms when a button is pushed on lcd via arduino and gsm sim900a can i have your email so that we can work together may be..

thanks here is my email

syedburhanmansoor@gmail.com

give reference in ur subject so that i can know..