How do I create a login on a different site to link to vbulletin

[off1c3r]

Hi

I am trying to make my site more secure. Its part of a boyscouts type setup and I need the information protected as best as possible (as this involves children/kids). Right now, the most I can do is block everything until you are logged in. However the top banner, and most of the links and sections still show under the top banner. The banner perfectly describes what the group is.

Either I would like to
1. Block everything (or all the nav links/sections) from people that are not logged in so only a user name and pw field is displayed...
or
2. Make a regular index.htm page for my url, that has only a user name and pw field and once entering that information, would load the 'home' content.php page (or any) inside the vbulletin.

Our site comes up on google a lot, and I need to make sure the new site is as hidden as possible to people to protect the users. (photos, videos, stories etc)

Thanks in advance.