How to get Kerberos settings on an Windows 2008 Active Directory?

[patkoscsaba]

OK, I've lost 2 days searching for this ... maybe someone will see and answer this.
How can I get, from a .NET program the "service ticket lifetime" Kerberos setting on a Windows 2008 and 2003 Active Directory server?
I am referring to the values you can set in Group Policy Manager, under Default Domain Policy / Edit / Windows Settings / Security Settings / Kerberos Policy