Please start new threads for new questions and only put private information in the private area. We want these threads to be as easy to follow as possible for users that might have similar questions.
The private area should only be used for things like FTP access, Usernames and passwords, email addresses, URLs, and phone numbers. Any comments that can be made public, should be.
1) You can place the content anywhere you want on the page. Just find the correct area and place it. For your home page that might be on the page: /webassist/Themes/yourthemename/templates/index.dwt.php
2) Your site already has a login and registration. If you want to restrict access to a page, just find a page that already has restricted access and copy and paste the code to a page where you want it.