wireless network /internet connect

I have 2 brand new computers. One is a 2 ghz emachine and
the other is a toshibal laptop. I have a motorola sbg1000
gateway that my cable modem plugs into. I can connect
these computers with a cat5 cable and they both will go on
the internet. when I try and connect the laptop wireless.
I can not get even a network connection. When I run the
network connection wizard on both of these systems I get
a "Printer spooler error".
anyone have a clue????
dan