Hi, Unfortunately any of Bernina's software that is older than Version 5 , will not work with Vista. There are some software patches available on the berninausa.com web site, but there is nothing out there that will help you if you have any Version 4 software or older. Microsoft really through out a curve ball to everyone with VISTA as there is a lot of software out there that will not work in that operating system.
Actually the lowest cost solution would be to get a nice used computer that runs Windows XP. You do not need a super fast, state of the art computer to run embroidery programs.
I bought a nice used computer at a yard sale for $10.00 and it even came with the XP install disk. I replaced the hard drive just because they do wear out after a few years, installed XP in it and that computer is now in my wife's sewing room and it is only used for her embroidery work.
You might have a computer repair shop in your area where you can buy an older XP computer that has been reconditioned. The few dollars you would spend to get an older computer would cost you far less than buying new Bernina Version 5 software. It is EXPENSIVE! Good luck...bushvideo