This worked for me and I am so happy I don't have to put up with a Windows machine in my house. We're all Macs and we're all a lot happier.

I'd like to add to what DSP81 says:
You'll need to edit the configuration file of Fusion. It is a file that is the name of your virtual machine with a .vmx extension. You will need to add this line to the configuration: usb.generic.allowHID = "TRUE"

The file is part of an Apple project file package. In order to locate the file , you need to right click on your virtual machine file (Ctrl-click for those without a multi button mouse) and choose "Show Package Contents". My virtual machine file was stored in ~/Library/VMWare/ ("~" refers to the user's home directory).

Once the package contents are displayed, you can see the file with the .vmx extension.

Thanks to DSP81 and everyone else on this forum for saving me hours of work figuring it out on my own.

-Paul