HP Deskjet 6122 and Windows 7

Surprise, surprise. There is no specific W7 driver for the HP 6122. But you can get around it by going to the driver section of the device properties after you connect it to your computer by USB and change it to a Windows 7 in-built driver for the HP Deskjet 6940.
Seems to work a treat.
Seems to work a treat.