PIX 7.2 VPN with kerberos / ldap authentication and authorization

anyone ever did this configuration with a ver 7.2 ?; i can make it work
:?

what i am trying to do is:

vpn users from windows xp; connecting to pix through L2TP and
authenticating to the active directory servers in the inside interface.
Telecom, Cabling and VoIP continues...
Tags: Networking technology Cable LAN