Query and update active directory user info via web page

Does anyone know of any  sample .asp or other web pages designed to query and update Active directory user info that I could modify?  I would like users to be able to update their own personal information and look up other users info (telephone,cell,etc.).  Thanks!
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would you be so kind to responde to the suggestion?
ewattnemAuthor Commented:
Looks good.  If someone needs to purchase a verision to do employee directory lookup they can try peopleupdate from webactivedirectory or rdirectory from namescape
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