If you're using Telstra Broadband, I suggest that you use Telstra's own DNS (domain name server). You can change your TCP/IP settings via
Control Panel,
Network Connections.
Find your
network device, right click the device and select
properties.
From the
device properties, locate
Internet Protocol (TCP/IP) and click
properties.
Once inside your device's TCP/IP properties, you will be required to assign Primary and Secondary
DNS servers addresses.
For Telstra customers:
Primary DNS: 139.134.5.51
Secondary DNS: 139.134.2.190
Then click
OK twice (different windows).
If this makes no sense, or you don't know what's going on (or it has already been configured) - then disregard this post.