King of the Dead
As an added bonus, your average router also acts like a firewall, protecting your computer from a bunch of malicious attacks that will just be ignored by the router.
Get a router. Now. And you could get one with wireless support, just in case you get a DS or a Wii.
Well, I have a DS and am certainly going to be getting a Wii... I have a Mac so I'm not really concerned about attacks though I suppose it would still be a good thing to have.
I believe I will look into it tomorrow.