What a 4 Port Wireless Router Does

We have three computers in our home.  We have 2 desktops and a notebook.  All have ethernet ports but the notebook doesn't stay in one place so I use the wireless connection method to connect to the internet. 

I use Comcast high speed internet as my ISP and connect through a cable modem.  The cable modem has one ethernet connection, so only one PC could be connected at a time.  Now comes the 4 port wireless router.  I have my Linksys 160N connected to the ethernet connection on the cable modem.  I have my computer  connected via direct connect Cat-5 ethernet cable.  I ran a 75' Cat-5 cable through the wall and around the corner of the house, through the wall and into my wife's computer.  I use the wireless connection for the notebook and can view it anywhere in the house.  I haven't tried outside yet but the range is probably sufficient to allow that.

All three machines can be on the internet at the same time, running at the same speed.  I cannot think of another way to accomplish this without using a 4 port wireless router.  It works beautifully.  I can see the files on the other computers from mine and can transer the files if I desire to do so.  All in all, the networking of my home was a snap thanks to the Linksys 4 port wireless router.