Originally Posted by
SpaceBass
What that means practically is that a lot of devices are not going to work, at least right away, with 64bit vista.
Unless they've got a 32-bit driver layer for 64-bit vista, they also need to have the drivers recompiled. We use XP 64-bit at my work, and driver availability is a bit of an issue, and there's no signing requirement... just a requirement for 64-bit compatible drivers.