1.Log in to your Gmail account
2.Google should detect which country you are from and it will automatically show a pop up menu guiding you through it but if it does not continue to step 3
3.Go to the settings menu in gmail
4.Click on the labs menu and activate two options,text messaging in chat and sms in chat gadget
5.Once you have done this when you type a number in the chat box(the one written search,add or invite) it will give you the option to send an SMS
6.Receiving the SMS is free but a reply will be charged at standard network rates,you are also limited to 50 free sms every 24 hrs
For more details or if you want to sign-up to gmail click here
