The story has a happy ending. Today, I finally installed a PCI Express Firewire card. When I booted up my PC, Win 7 searched the internet, and installed a driver. When I opened Vuescan, it found the Nikon Coolscan 8000, and it works beautifully. The previous owner included the hard to find (and expensive) glass medium format film carrier, along with three glassless carriers. This scanner is a beauty.
Thanks all for your help.
Dave in NJ