Log into your VK (VKontakte) account and click on the following URL: http://vk.com/dev.
Click on Create an Application.
Set the category to Website
and fill in your application title, site address and base domain.
Press the Connect Site
button.
You will be requested to enter confirmation information such as a mobile confirmation code.
After confirmation, you will be redirected to the appliication settings page.
Click on the Settings
tab.
Copy and paste the Application ID
and Secure key
to the appropriate fields in Social Login settings page.