This is an older scanner that is not supported by Windows 7. Even though not listed as a compatible scanner, you can try VueScan (link is below) to see if your scanner will work with this application. Good luck!
This download is the latest driver package released for the Genius Scanner (HR6X-Slim). The setup will work under most Windows systems (98/Me/2000/XP) and installs version 1.5 of the scanner driver onto your system. When you are ready to install the driver, unzip the contents of the download package, run Setup.exe and follow the prompts.