Analysis Services 2000 - 2008 requires the following components:

x86 prerequisites

Microsoft Core XML Services (MSXML) 6.0 
Download site (Microsoft)
Microsoft ADOMD.NET  
X86 Package (SQLServer2005_ADOMD.msi) - 3330 KB

Microsoft SQL Server 2005 Analysis Services 9.0 OLE DB Provider
X86 Package (SQLServer2005_ASOLEDB9.msi) - 12160 KB

 

x64 prerequisites

Microsoft Core XML Services (MSXML) 6.0 
Download site (Microsoft)
Microsoft ADOMD.NET  
X64 Package (SQLServer2005_ADOMD_x64.msi) - 5465 KB
Microsoft SQL Server 2005 Analysis Services 9.0 OLE DB Provider
X64 Package (SQLServer2005_ASOLEDB9_x64.msi) - 27981 KB

 

If not installed, you will be prompted to install these components when you try to connect to Analysis Services.