Came across this (http://www.eggheadcafe.com/articles/20010126.asp) article.  Having a very similar challenge I also went down the LDAP path.  I'm missing one piece, may be you can help (?).  While this script validates whether the user account & pwd is valid via ADSI, how can one suppress the user name / pwd prompt when browsing (file explorer) to a file store?  
 
The goal is to avoid having the end user have to type a user name and password to access the file share.  The share is stored on a seperate network.  I want to pass a dummy account that authenticates with read access.  The script is VBS currently, to be ported to ASP classic. 
 
Any guidance is direction / appreciated.  Thanks!