Hi michaelarry,
To switch from a wireless to a USB connection, it is recommended that the driver of the PIXMA MX860 is reinstalled.
I can assist you with this, but first, I would need to know the version of Windows or Mac OS X that is installed on your computer.
Please note, Canon's Forum is not intended for immediate help, but a place to allow for the Community to give you assistance and feedback. If this is an urgent support need, please use the link below to reach our friendly Technical Support Team:
http://www.usa.canon.com/cusa/consumer/standard_display/contact_us_consumer
