wondering about AdventureWorks sample db in Sql2k8 not R2

Hi all of you,

I'm using Sql Server 2008 Enterprise Evaluation Edition, Windows 7 sp1.

When I try to attach this db in my SSMS I get this error:

TITLE: Microsoft SQL Server Management Studio

Attach database failed for Server 'ENRIC_1972'.  (Microsoft.SqlServer.Smo)
The database 'AdventureWorksDW2008R2' cannot be opened because it is version 661. This server supports version 655 and earlier. A downgrade path is not supported.
Could not open new database 'AdventureWorksDW2008R2'. CREATE DATABASE is aborted. (Microsoft SQL Server, Error: 948)

I suppose that it does happen 'cause the MDF file is R2 and my RDBMS is 2008 pure... is there any AdventureWorks sample db for Sql2k8 without R2??

Thanks a lot, any help would be very appreciated.

Enric