How to deploy Drupal 7 on IIS with SQL SERVER 2008 R2

We are trying to deploy DRUPAL 7 on IIS with SQL SERVER 2008 R2. We are able to configure deploy the app on IIS but we are unable to configure SQL SERVER 2008 R2. By default it is showing MYSQL and SQL Lite.

We followed steps given in the DRUPAL Site to configire SQL Server 2008 R2. https://www.drupal.org/node/1207972. Refered this link and downloaded the files and copied in the respective folders but we are getting blank screen when we select configure database section.

Thanks,
Bhagat