That's a very good question. You'll need to do your research. Go to the
program mftrs.'s websites and find out. Don't forget to research your
peripherals, too (printers, PDA's, etc.).
Download, install, and run Vista Upgrade Advisor. Make sure all your
external devices are turned on. The program will advise you if your current
computer can handle Vista. Since you are going to buy a new computer with
Vista already installed you will only need to look at the sections that deal
with externals (like printers) if you intend to use existing stuff with your
new computers. Also look at the programs section. That will tell you if
your existing programs will run on Vista.