Install Sample AdventureWorksLT2012 OLTP database on my SQL Server 2012 Express

I downloaded the mdf file from http://msftdbprodsamples.codeplex.com/releases/view/55330 and placed it at C:\mssql_data. The in SSMS window, I issued:

CREATE DATABASE AdventureWorks2012
ON (FILENAME = 'C:\mssql_data\AdventureWorksLT2012_Data.mdf')
FOR ATTACH_REBUILD_LOG ;

The message recieved are as follows:

File activation failure. The physical file name "C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\DATA\AdventureWorksLT2012_log.ldf" may be incorrect.
New log file 'C:\mssql_data\AdventureWorksLT2012_Data_log.ldf' was created.
Converting database 'AdventureWorks2012' from version 705 to the current version 706.
Database 'AdventureWorks2012' running the upgrade step from version 705 to version 706.

It should be noted that I have to change the file permission in order to install it sucessfully. The screen shot for the file permission is shown below:

The "full control" should be selected.