Yor going to get nothing but problems with the VFD in the Antec either with Vista(32 or 64bit) or Windows XP.
basically is a peice of c***, 99% of people with the fusion either MKI or MKII version have problems have a look here click here and the scroll down to the Antec forum there is some help there but as said most have given up and blanked out the display or done like i have and switched to another case. which is a real shame as the Antec Fusion is very well made and looks really good it's just the display thats c***. also you'll find that Antec don't tell you how to actually connect it correctly have a look here for this click here and go to the forums section loads of good info there just do a search for the Antect VFD display in the hardware forum and you'll find the messages about how to correctly wire the VFD up.
any other problems just ask on the project htpc forum.