Set it up wired (no other option here), then unplug it. You have to set up all routers while wired. Set it up with the proper encryption, WPA, set the laptop to the same encryption, and unplug the Ethernet cable. Have the laptop find the connection and voila!
I have been successful setting up several home networks that have been a combination of wired and wireless connections. However, someone has asked me to create a wireless connection for their sole computer, a wireless capable laptop. Is there some way to do this other than purchasing a broadband card? In other words, is it possible to set up a wireless router without at least one wired connection to the DSL or cable provider? Please provide any ideas as I am puzzled about how to approach this. Thanks for any assistance.