WindowsAD SSO to MSAS DB (end to end SSO)

We have set up a new SAP BO 4.1 SP04 on windows platform and enabled Windows AD authentication and SSO which is working fine.We also need to set up end-to-end SSO i.e. Single Sign On should also work for our MSAS database.

Do we need to configure the Service Principle Names (SPN) in Windows AD for the MSAS server as we do it for enabling setting up SSO to SAP BO?

We have found out this info from the below two links:

http://wiki.scn.sap.com/wiki/display/BOBJ/Setting+up+OLAP+Microsoft+Analysis+Service+through+an+XMLA+connection+with+SSO

Please let us know if anyone has done this before.

Thanks.