I doubt its possible to turn a Scanner Wireless, as you would need the Scanner to actually recognize it has a wireless adapter attached to it, and then make use of it. I really don't think such actions are coded into the Scanner's controller chip. If at all possible you'd have to create your own Chip, and add it to the existing scanner chip. You would then also have to create software that can send and receive requests to and from the scanner via the Wireless device.
Don't know how hard it could be, but it certainly wont be as easy as just plugging a USB wireless adapter into the USB port on the scanner.
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Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.