I dont know what type of internet access you have but I have a spare - "Scientific Atlanta VoIP cable modem" sitting here with all the necessary cables and install disks ... I THINK but not 100% sure you can use it with any cable internet access and not only with Optus who we are with. Its some super high speed, gee whizz, you bueat modem and I get some stupid speed download with it. It connects to the computer via USB or Ethernet so you have options.
They sent it out when we moved house for no good reason and realistically we cant use 2 cable modems

... so if you want it then its yours (unless mine dies

)