Okay...the problem has been solved...sort of.
The problem is that the "router" my friend gave me is actually an ethernet splitter. So, right now, I don't have a router and, so, can only connect one computer at a time.
This is a solvable problem. It will be solved.
Meanwhile, I have the work computer off and the downstairs computer on. This means that the Princess will have to load QQ downstairs, which is great! It is her using Chinese sites that ruins the work computer. My hope is that maybe she'll use QQ a bit upstairs, but that she will do everything else downstairs on the new KIDS computer.