We have the Vista logon screen working in both x86 (32-bit) and x64 (64-bit) versions of Server 2008 now, the solution is to use authui.dll from Vista without SP1, I don’t think there is any other way short of reverse engineering the existing Server 2008 authui.dll which is not very legal haha.
For more information on how I came to this, as well as my lengthy research/notes on our discovery here, check out the revelevent thread (from page four onwards) here on the forums. Link – viewtopic.php?f=11&t=296&start=30
Fancy putting it into the tool sawo? =D
