I downloaded the driver from THE site. I seems to be the same as the disk that came with the camera. My camera is a Rev. 4. The one they show compatible with Vista seems to be a Rev. 1. Mine worked fine with XP It gets a raster on vista but the raster is trash.
Following is from JASCO site (This only applies to cameras marked with Ver. 1 (item #98067) on the bottom of the base of the camera.) If your camera does not have Ver. 1, it is not Vista compatible.
So if your camera does not have Ver. 1 on the base and you are using Vista------forget it.