How do I validate user credentials

From: Paul Steele (paul.steele_at_acadiau.ca)
Date: 03/02/04 

Date: Tue, 2 Mar 2004 18:33:53 -0400

I'm writing a C# program that needs to validate an Active Directory
username/password? The program will be running on a workstation that is not
part of the domain. It doesn't have to do anything else other than determine
if the credentials are valid. Any pointers would be appreciated.

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