I'm not entirely sure that this is possible within asp. If it is i still dont thnik you could do it, presumably your web system runs of a server. This server i imagine will not have access to each users machine, therefore would not be able to gain the authentication information.
Would it not be easier and simpler, if the users who need access to your system, simply provide you with the details that they wish to use (windows authentication) and you manually update the database with these access details?
paul
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