The reason you cannot view /NEW/ but you can view /NEW/index.shmtl is because IIS needs to be told that index.shtml is a default document, otherwise it thinks your trying to browse the directory which is probably not allowed. If you dont have access to IIS then you could change the default document extention to be .htm

As you probably know, NT permissions work differently to UNIX, you can chmod directories, you need to give different users different permissions. What you want to do is give Internet usrs the right to view the pages and give the system account full control of the links dir.

Hope this helps.