I have no idea personally.
Are you using MU? It looks like something for secret questions or something... If you look at the readme, you are only going to need your sql user and db credentials, and your hostname is *usually* localhost.
You don't even really need to make a WP config (wp will make one for you where you enter the credentials in the browser instead of prior to upload)
Hope this helps, get it installed ok?
note: if you're sticking with 2.7.1 for a certain plugin, by all means, but I can say: 2.8 is really nice and I only had problems with one plugin! (like/dislike post/comment twin plugins) and auto upgrade went OK!