CA Netegrity SSO and webdispatcher

Has anyone configured a senario with netegrity SSO and sapwebdispatcher? We are upgrading to ECC6 (NW 2004s). We currently have 4.6C, ITS, ESS. We have to use the Integrated ITS, but now we need to figure out how we retain the current authentication scheme where users are authenticated via CAs Netegrity. If any one here has gone through this I would greatly appreciate any tips.

Regards,

George Adjei