Can you be a bit more explicit? You mean this error?
Code:
Forbidden
You don't have permission to access / on this server.
Apache/2.2.16 (Ubuntu) Server at www.gtbastrowise.com.au Port 80
Is it that the user httpd is running as doesn't have rights to read the dirs and files for that host? My Apache runs as nobody. You do have the right DocumentRoot?