Copying Default User Profile to All Vista Machines

Hello,
I am trying to research the "official" MS method for copying the
"Default" profile out to existing installations.
Since these are PC's with existing installations of Vista Enterprise,
the sysprep method cannot be used.

I have read on newsgroups that it is possible to copy the Default
folder out, as I suspected.
If you currently do this, would you kindly share your xcopy or
robocopy syntax which ensures that hidden files/directories are fully
copied and replaced?
Thanks,

Jamie