End Windows Authentication session?

[J]

Hello. Does anyone know if there is a way to end a user's logged on Windows
Authentication session? I have some .asp files that make calls to our SQL
Server which can only be accessed through Windows Basic Aunthentication in
using SSL to encrypt everything and was wondering if there was a way to end
the user's windows authentication session and force them to relogon if a
certain time expired or if they didn't close the browser? I'm familiar with
ending asp session variables but in this case this wouldn't apply since the
user is already in using windows basic authentication.

J