I am undertaking a project that involves creating a website, well its more of a extension to a existing website, the current website is a simple HTML website. I need to add a secure/private section to the website in the form of the button on the menu bar, like “members”, so when the user enters his/her username/password. Depending on the username/password entered it takes them to a different page. This section should be secure. The pages that are in the secure sections contain document files for them (users) to download. The server that the website is hosted on is running windows NT4 server and IIS 4/5. What is the best approach/method to use to implement this?
I was thinking if using using ASP and connecting to a database.
I am a complete newbie at this so any tips, suggestions and help in any other form(s) will be extremely appreciated.

Thanks in advance guys

You can use SSL/https for your secure section.
If not available on your server you can use the standard User Authentication extension in Dreamweaver UD/MX.