2 questions, (read description)!?

[Dave77]

For your first question, I believe what you're referring to is "tagging". See http://www.facebook.com/help/?page=18947 for more information on what it is and how to do it.

As for your second question, you need to have your browser set to accept cookies. If you use Internet Explorer, go to the Tools menu, select Internet Options, click on the Privacy tab, and set the privacy level to Medium or lower (though I don't recommend setting the privacy setting lower than Medium).
If you use Firefox, go to this page for instructions: http://support.mozilla.com/en-US/kb/Enab...%20cookies
If you use Google Chrome, go to: https://www.google.com/support/chrome/bi...swer=95647
If you use another browser, you'll have to find the instructions for allowing cookies in the support info for that browser.