I am trying to install the AdventureWorksDB for the MS SQL Server 2005 Express Edition with Advanced Services SP2, but when I attach it to the Databases I receive the next message:
 
Msg 5120, Level 16, State 101, Line 1
Unable to open the physical file "C:\Archivos de programa\Microsoft SQL Server\MSSQL.1\MSSQL\Data\AdventureWorks_Data.mdf". Operating system error 5: "5(error not found)".
 
I have not idea about why this error ocurre,
Can you help me ?