Using Airport Express to make an ethernet-only device wireless?

The AirPort Express can act as a single Wi-Fi interface to any computer or almost any other devices such as game consoles that has an Ethernet port but doesn't itself have built-in Wi-Fi, thus making the connected device wireless.

 

short answer: yes

a couple things to remember.

• you'll want to set it up to join your existing wireless network.
  
• it's much easier (and less prone to problems) to connect it wired to set it up. you can plug an ethernet cable directly into a computer, or your existing network. get it all set up and happy, then unplug it and move it to the location you want to use it.
• the older G only version won't work, shouldn't be a problem as they are all several years old by now, but just in case you try to buy of ebay or something.