There have apparently been some teething problems with this projector and 3D Vision, but the first two links below offer some helpful tips for getting NVIDIA 3D Vision working with the ViewSonic PJD6531w:
- ViewSonic PJD6531w 3D Projector Review – NVIDIA Forums – Page 3
- 1280×800 3D Vision
- ViewSonic PJD6531w – 3D Vision Blog
- 3D Vision wizard workaround
- Viewsonic » PJD6531w
- Viewsonic product page
If you have any tips or tricks for the PJD6531w and 3D, please post in the comments!