You can't realy. The best you can do is to call HttpRequest.LogonUserIdentity.

That's the first thought I had when I wrote the thing. "Oh how this could be perverted into something bad." I uninstalled the clients and server, zipped up the source and packed it away so noone could grab it. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007