What's the relation between Vista forcing companies to make x86_64 drivers, and WinXp 'x64' getting them? You state that Vista will be making companies do it, therefor Vista will have drivers. Considering Vista and XP need different Drivers, I don't see the relation. Just because the drivers were ported to a x86_64 operating system doesn't necessarily make it easier to port it to another x86_64 operating system. Windows XP x64 isn't Windows XP in the sense that Windows XP isn't Windows Vista, it's not much older than Vista, so why would people want to switch to it? Do you think after Vista is out, they'll actually keep heavily developing on it?