Hi
To get listed on the directory is pretty easy IF your network connections allow the proper outside contact:
Fillout your PAlace name and e-mail here:
http://www.palacetools.com/palace/requestkey.php
The KEY you will get has to be edited into the Palace prefs file, for more info on that check here:
http://www.palacetools.com/list/getlisted.html
As for the Palace viewer: it doesn't really work anymore, the only thing that does work is Instant Palace but to be honest I only know how to set this up for my hosting customers 8)
hope this helps you out.