How to identify ephemeral port range of Windows server2008 using registry keys? What are the new Registry keys?

Im using both Windows Server 2003 and Windows Server 2008. In Windows Server 2003 ephemeral ports set by the admin
can be easily identify by using the the Registry values.In Windows Server 2003 , Epemeral lower range is 1024 and
it cannot be
changed by the administrator. But in Windows Server 2008 the Ephemeral range , both the lower end and the higher end
can be changed by the administrator(e.g.netsh int ipv4 set dynamicport tcp start=10000 num=1000). Here i'm not
talking about the default port range for the windows server 2008.
So My application need to identify the ehemeral port range defined by the administrator in WS2008. So What are the relevent
Registry keys to identify lower end and the higher end in Windows Server 2008.?