How to link a wireless printer.

[storme]

Hi, I am on a Windows Vista Home Basic 32 bit computer.
I have a wireless printer (Lexmark Impact S305) it is on our main computer which runs on Windows 7.
I have been trying to connect it for a few days now and having no luck.
Can you help?
I have a wireless usb which picks up signals of other computer wireless signals.
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[Retirednow]

You say the printer is installed the the main computer, how is the printer installed on the main computer? Did you install the printer on the main pc via the USB? If you installed the printer wirelessly you had to install the printer to connect to the router. If I remember right you need the CD that came with the printer to install the drivers on the pc first. Go here for the manual: Lexmark - United States+