This reminds me of a thread I started on fedoraforum.org, asking if anyone got Fedora 7 running on the new SR MBP. Nothing. Nobody.
In all fairness though, Vista 64-bit probably isn't used that much on a MBP. Unless you have an actual, real life need for 64-bit computing, you may want to try a 32-bit Windows install. It'll be just as fast, if not faster, for basically everything.