Access secured notes via feed reader/basic info about http authorisation

I'm running a website with Drupal 6.2 with all nodes only accessible to specific roles. That means login is required. However I want to give all my users the possibility to access nodes via a feed reader such as Google reader. I have searched the forum back and forth and from what I read I gather that HTTP authentication is the right module (or is it?). I have now installed the module but I don't really know how to configure it nor what it exactly does. The documentation is rather basic. On the configuration page for the module I have a text field where I am supposed to 'Promote HTTP authentication on pages' and under the field it says 'On which pages to promote HTTP authentication, if an anonymous user stumbles upon an access denied page. Enter one page per line as a Drupal path. The * character is a wildcard.'

What am I supposed to do? Type in the name of the page that I want to give access to? Or the name of the feed? Can anyone help and give an example? What would I have to type in if I would like to give access to one specific feed? What, if I would want to give access to all feeds of my site?

The next qeustion is, what would exactly happen if I get this working. Lets say, I am trying to access nodes via my newsfeed reader. Would the newsreader prompt a pop-up via which I would have to sign-in?

Loads of question. I hope someone can help me.
:)

Thanks a lot, Axel