In the interest of peace and harmony, when I unplug the computers in the bedroom before the floor sanding starts on Monday, I am going to carry them down and put them on the kitchen table where I can hook them back up for the girls to use while this is going on. Since they connect via wireless dongles, this isn't too difficult.
There was something niggling at the back of my mind about my office computer, so I opened up the box to see the label that says Wi-Fi connection. Look at that! My system has a built in wireless adapter.