I searched for a more recent OS (versus Win 98), but couldn't find one... you can try this one though and see if it works:
Since it is just the driver, you will have full funtionality, but not the vivitar extra software that usually comes on the installation disk (as long as you have another photo-editing app, you should be fine!)
If you have any further issues, feel free to post a comment to this thread, and I will be happy to assist you further!
Hope this helps!
PS - If useful, please don't forget to vote!