This one is easy for me
Make a .htaccess file on your pligg root folder and put this code on it
Code:
RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.megabyte\.com.au$ [NC]
RewriteRule ^(.*)$ http://megabyte.com.au/$1 [R=301,L]
and with the direct publish is very easy too
go to your admin panel > Configuration > Voting :
Votes to publish
description: Number of votes before story is sent to the front page.
value: 5 (put here a 1)
default value: 5
expected values: number
Hope this be helpfull for you