SQL Server Database Restore for Dummies – like me

I got a SQL server (express) database backup (.bak file) from a customer to do a test against. In the past, I just restored from my own, previously existing databases, so I never came across the issue of restoring one from a complete different machine. Using SSMS I got the following error messages

The backup set holds a backup of a database other than the existing database – or

File 'Db' cannot be restored to 'C:\Program Files\Microsoft SQL Server\MSSQL10_50.CUSTOMER\MSSQL\DATA\Db.mdf'. Use WITH MOVE to identify a valid location for the file.

The path does not exist on my machine. After browsing the web I found out the following:

1. create a new and empty database named as the one from the customer (in this case ‘Db’)
2. use a script to run

   RESTORE DATABASE [Db]
   FROM DISK = 'c:\theDbBackup.bak'
   WITH REPLACE