How to resize your disk image and then allow Windows to recognize it.  (Mostly all via:  Jim Culbert (thanks!))

1. Resize / increase disk space in Fusion settings.
2. Download GParted, Boot the VM to it (more boot specifics here)
3. In Fusion CD settings for the VM, choose to boot to the image you downloaded.
4. Select the default GParted options and extend the disk to use the rest of your allotted space
5. Voila!