Hi
When I clicked on your link I didn't find anything.
It's safe to install the vista drivers since they won't effect anything but you scanner, and they may work.
I have an Epson Perfection 1650 and I could not find any driver that would work with 64 bit Windows.
My scanner worked fine on my old computer in Windows 7 32 bit.
I had to buy 3rd party software to run my scanner.
I ended up buying ViewScan software which works OK, but I'd like to be able to scan directly from Photoshop.
One of these days I'll get a new scanner but it looks like at this time they still don't sell a lot of scanners that support 64 bit.
I had the same problem with HP, when I upgraded to Windows XP!
I had an expensive large format scanner and they didn't make any XP drivers for it.
I was so mad I switched to Epson for everything and never bought a HP printer or scanner again.
Mike