Requirements to SMS services for a website:
1. You must have an account at http://smscoin.com/
2. You must be a premium user. It is not possible to enable SMS services for free users.
How to sign up to SMScoin
The first step: fill in the registration form.
After filling in all the necessary data in the registration form, click "Registration". In your registration is successful, you will see the following message:
The second step: Account verification.
After registration, you are supposed to receive a message with your verification code and a link to the page where you can verify your account:
Click the link and type in your Username, Confirmation code and Security code from the picture in the form.
Read more at: http://usms.ucoz.com/index/more/0-11