TLS and Smart Card

From: Keith Henrickson (henrik51_at_community.nospam)
Date: 01/19/05 

Date: Wed, 19 Jan 2005 14:51:04 -0800

We have the following situation:
User logs on to a workstation on domain XYZ via a Smart Card.
User runs our client app to talk to a server also on Domain XYZ using
Schannel TLS

What is the easiest way to get the certificate that they just logged on with
from their smart card so that it can be passed to the TLS layer so that it
can go to the server and their identity verified?

Thank you!