SQL Server 2012 PowerPivot System Service not visible in Central Administration

Hi all,

I want to test PowerPivot 2012 on the following configuration:
- Windows Server 2008 R2 
- Sharepoint 2010 - Enterprise edition
- SQL Server 2008 R2 
- PowerPivot for Sharepoint<o:p></o:p>

As such, I downloaded SQL Server 2012 Evaluation and tried to upgrade SQL Server 2008 PowerPivot for Sharepoint instance to SQL Server 2012 PowerPivot for Sharepoint. It didn't work as it's not possible to upgrade from Enterprise to Evaluation edition without a pid.

Next, I uninstalled the existing SQL Server 2008 PowerPivot for Sharepoint and I installed the SQL Server 2012 PowerPivot for Sharepoint. 

I started to configure PowerPivot in Central administration (http://msdn.microsoft.com/en-us/library/ee210609.aspx) , but I got stuck at the 2nd step Create and Configure a PowerPivot Service Application (http://msdn.microsoft.com/en-us/library/ee210685.aspx) in Central Administration.

The problem is that both SQL Integration Service  and SQL Server PowerPivot System service are not visible in Central administration > Manage services on server; however they are visible and running in Windows Administrative Tools > Services.


Do you think the services are missing in Sharepoint Central Administration because the Sharepoint configuration database is on SQL Server 2008, while the Powerpivot instance is on SQL Server 2012 ?