Virtual machine

I am new to the os but i do dual boot and am learning to love its flexibility and ability to repair windows. I find myself needing help badly i hope someone here can. For the last 45 dayse and my kids have been trapped in what appears to be someone elses virtual network or machine. Our ability to utilize our own network has been taken away im only able to breech using a live cd or phone linx seems able to fix everything else. Any ideas if it can help us now

Can you explain more?

Can you please explain some more about this please?

How do you know? How does it manifest itself? What does it mean? A link to a screenshot/photograph might be helpful?