I Bought a Vivicam35 n1659 camera from Wal-Mart and lost the installation disk. I tried downloading the other drivers listed on this site and the zip files where Courrupted or Invalid.
I registered the camera on Vivitar's site, they didn't list it under support but it was listed in the products available for registration they told this:
Email us at firstname.lastname@example.org and request a driver for a vivicam35 and we will send you the driver via email.
I did and this is what I got. If you experience this same problem, I suggest you do what I did and register your camera and then e-mail email@example.com for the driver they are fairly quick to respond, less than 24 hours to respond to me and get my driver.