a wireless network in your home would mean you have no cables running from the computer to your DSL modem.

You would have a wireless card {w/antenna} in your computer and you would have a wireless router that sends the signal from the DSL modem to the card in your computer.

But if you have your computer near to the DSL modem you probably have a cable connected to it "wired". Or you might have a cable running along the wall or in the wall that you connect to.

I can't tell if my webpages load faster or not because we are on the edges of the service area and we share a wireless connection in the home between 3 computers- so that slows things down.