For anyone out there that's moved to 64 bit Vista from XP and found SyncToy useful on XP, and missed it when they went to 64 bit Vista (probably not many). Then I've just spotted that MS have released SyncToy 2.0, but it's only available as a beta at present.
I haven't tried this myself yet, but if your interested it can be downloaded here:
Download details: SyncToy v2.0 Beta