Airport Extreme And Printer

Some time I use Airport extreme and my printer is connected with a usb cable.

To my Mac it is no problem it is printing like it has to be.

But there are 2 Windows PC in the house, both can connect to internet with airport.

But in Printing there is a problem,

Windows can see the printer , but at the moment you say "print" nothing happened it goes only "in queue"

(In windows you can also not delete the queue)

What can be done?

Thanks and regards

Putu