Then you should use the SQL backup of the demo database: ...\SQLDemoDatabase\CommonAppData\Microsoft\Microsoft Dynamics NAV\X0\Database\Demo Database NAV (X-0).bak (this is the path on the NAV 2013 DVD and I assume it will be the same for NAV 2009)
Restore it in the SQL Management Studio, open the database with the NAV Client and export your required object.