Creating a password protected intranet subweb

Hi Forum Buddies!

I need your help once again. I have a Company intranet that I am creating. I have been asked to create a subweb with very confidential information which would need to be password protected so that only certain persons will be allowed in. How do I start that? I already looked at setting up permissions but that is not what I am looking for. I saw on one of the websites that I frequent, where when you need to go to a secured place, a dialog box comes up and asks for a username and password before allowing the page to view. Also, I do not want the users to be able to self registrate. Any ideas out there?

www.4guysfromrolla.com

lot of stuff there on passwords
or

aspin.com

If you're using IIS, you can disable anonymous access on a virtual directory. Then you can use NTFS permissions on each file in the virt. dir. to say who can see them. If you're running NT4/5 and your users log on to a domain and run IE, the access control will be transparent to your users -- no username prompt, it'll be handled automagically.

Thanks for the help, buddies! :D :) :D