<p>You don’t need a router - that’s only if you’re setting up a wireless network, which is unnecessary. </p>
<p>As for the ethernet cable (your D’s computer undoubtedly came with one, although if you want a long one to make sure it reaches the plug, you can buy a 20’ one for about $10 at Target):</p>
<p>
[Connecting</a> Your Computer to the Campus Network Through a Direct Network Connection](<a href=“http://www.udel.edu/topics/connect/ethernet/index.html]Connecting”>http://www.udel.edu/topics/connect/ethernet/index.html)</p>
<p>Bear in mind that these pages were written a while ago: 1) they don’t even mention Windows7, which would be the operating system on most new PCs; 2) virtually every computer comes with an ethernet adapter now - it’s standard equipment, and 3) they talk about phone modems, which are dinosaurs. They are ‘over-instructing’, if you will, for anyone with an old machine, and it makes the whole process look much more complicated than it really is. I’m sure your D will figure it out!</p>