Verifying FeaturePack on SQL Server 2008 R2

how can I verify that "Feature Pack for Microsoft SQL Server 2005 (December 2008 version - English)" is (or is not) installed on a computer? I need to know if the following features from that Feature Pack are installed:

• SQLServer2005_BC.msi (Microsoft SQL Server 2005 Backward Compatibility Components)
• sqlncli.msi (Microsoft SQL Server Native Client)
• SQLServer2005_XMO.msi (Microsoft SQL Server 2005 Management Objects Collection Hot Fix KB936081)
• SQLServer2005_ASOLEDB9.msi (Microsoft SQL Server 2005 analysis Services 9.0 OLE DB Provider)
• SQLServer2005_ADOMD.msi (Microsoft SQL Server 2005 Analysis Services ADOMD.NET)

(System is running SQL Server 2008 R2 on Windows Server 2008 R2)

Regards, Pelle