Clicking "add connection" needs a SQL Server option
Click "add connection" there are 3 options "linq to sql", "WCF..." and "MS Datamarket...". None of these allow me to connect to SQL Server. Nothing in "view more drivers" looks like SQL Server either. My friend got it to work after a lot of time & effort, but doesn't remember how he did it. SQL Server is very popular. It should be easy to connect to it.
The default option, LINQ to SQL lets you connect to SQL Server.