Once you have the driver, you will need to use power archiver to extract the files to a location on your machine of your chosing. (I suggest the desktop. The files will extract to a folder called "Disk1")
Open the newly created folder named "Disk1", and look for a file called setup.ini this will look like a notepad with a gear on it.
Open this file by double clicking on it, and what you will do next will seem silly. Change the string that says:
AppName=Polaroid Fun Flash 820 Camera Driver
AppName=Polaroid Fun Flash 320 Camera Driver
in other words just change the 820 to a 320.
The driver, will not reject itself, and uninstall if this string reads as a 320, instead of an 820. (trust me)
Once you've made this change, close the file, choose yes to save. Then install from the setup icon located nearby the setup.ini file you just modified.