Obtaining Kerberos tickets through WSE

Question

Does anybody know how to obtain Kerberos TGTs and Service Tickets from a Key Distribution Center for use with WSE? This remains undefined by the WS-Security protocol, and I'd like to know wether there are good solutions for this around. It's not required that this happens through WSE itself, but that would be handy. Unless somebody knows a better way of course... Thanks in advance Thijs