Approach 2:Disconnect all cables from the Optus box and put it to one side.
Plug Zyxel box in, with the ethernet (normally yellow) to your computer.
Browse to
http://192.168.1.1
The default password is
1234, enter this when prompted by the website (or use your custom password as applicable).
Select "Go to Advanced setup"
Select "LAN" in the left-hand column
Select "DHCP Setup"
Disable DHCP -- I'm not sure where the box/button you need to press is, as I don't have a screen shot of it available.
Select IP (in the LAN menu)
Change the IP address to 10.1.1.254 (subnet mask of 255.255.255.0)
Unplug the Zyxel box
Plug the Optus box back in
NOTE: It is also worth setting the Optus box up so that it doesn't assign 10.1.1.254 to something else (unlikely but possible). To do that:
Browse to
http://10.1.1.1
Click Advanced Setup
You're looking for DHCP, and you need to modify the range so the highest one available is 10.1.1.253. If you get stuck attach some screen shots, because I'm guiding you blind here, sorry.
Plug the Zyxel box in to the power and attach an ethernet cable (normally yellow) from the Optus to the Zyxel.
Attach an ethernet cable from the Zyxel to your desktop.
The network should now work, and you should have wireless.
Finally:Let me know how you get on.
If you get stuck, screen shots would be a MASSIVE help