Sharing printer via wifi modem

the pc sharing printer has to be on when you want to use it since its usb.
(on the pc with the printer that you want to share)
click start > devices and printers > right click on the printer and select "printer properties" > click on the "sharing" tab > check the box for "share this printer" and type a description

(on the pc that you want to connect the printer to)
click start and type \\computername (this is the name of the pc that is sharing the printer) > right click on the printer and select connect

if you are not sure of the computer name press the windows key + pause\break at the same time an a box will pop up with the computer name on it.