Single Sign On (SSO) integration in Powerbuilder Application

We have an application developed in PB v8. Our client has asked us if PowerBuilder application can integrate with their Active Directory using single sign on. Users launch the application from Windows OS. They login to their desktop with network user id and password. When they run PB application, it should automatically authenticate with AD server (like Keberos) and open the application without asking credential again.

If this is not possible in PB v8 but later version like v12.5 supports SSO then it is possible for us to upgrade our application to PB v12.5.

I would like some assistance with implementing SSO feature in PB application. Any help provided would be much appreciated.

-Ravi