well not forget (good? but not so good) ring0 drivers. due its msshit goal as they stated they will add workaround for you on request, probably for some $$$
they want to keep security and control over vista, and dont let you take over system.
so there will be 2 ways, cracked vista with allowing of run and install of not signed drivers or you will need to contact msshit support team to req some features in kernel, that you need from ring0 drivers and vista doesnt have now