Sheldon:
To check if the USB serial driver is installed, check in Device Manager, (shown in left picture)
After you have started ArcPatrol and the Virtual Scanner, use the dropdown to select the USB Serial port and then select Start..If you have more than one selection and the first one doesn't work, select the next one and select Start again...With the right one, you should see on the VS screen the same as is on the HP1 itself..