The box under your member name when you're logged in, i.e. "Ronnn", should have a "User Preferences" line.
Clicking that should bring you to a page that allows you to type in an email address, a home page, a bio, and a PGP/GPG public key.
This is not information that is only viewable by members, it is viewable by anyone.
I don't think this site has a private info link and the only way I can think of to do what you want would be to include a text file with the information in your files.
Files are only viewable by members logged in unless the file's address is already known.
