[Step1] You may access following link to download the latest driver.
ftp://ftp.penpower.com.tw/cs/WC65_A6Color_731.zip
[Step2] Please kindly decompress the attached zip file to the Desktop.
[Step3] Please go to "Start"---> "Computer" ---> right click on "Computer" ---> "Properties".
[Step4] Please choose "Device Manager" and click it.
[Step5] Please kindly check if "600 dpi USB Scanner" is showed. Please kindly right click on USB Device, select the "Update Driver Software" option.
[Step6] Please Choose「No, not this time」and than click "Next".
[Step7] Please Choose「Install from a list…」and than click "Next".
[Step8] Please click "Browse" button---> choose the path "C:\Documents and Settings\XXX\Desktop\WC65_A6Color_731" (XXX is the user name of the computer) --> and then click "next".
[Step9] Color driver installation complete.
[Step10] Please check first if the calibration is working.