Ehp4 SAP ERP 6 and Win Server 2008 SP1 and SQL Server 2008 SP3

Is this below combination Supported by SAP,

Currently on :

Ehp4 SAP ERP 6 and Win Server 2008 SP2 and SQL Server 2008 SP1

Trying to upgrade to:

Ehp4 SAP ERP 6 and Win Server 2008 SP2 and SQL Server 2008 SP3

Please help,

Thanks in advance,

Shriniwas