Copy files from 2003 Server to 2008 Server preserving Owner

I want to copy a directory tree from a Windows server 2003 to my new 2008
server. I did a copy/paste and it made me the owner of all the files.
I used ROBOCOPY /E /COPYALL and it gave an error:
You do not have the manage auditing user right.
I tried to give myself these rights, but nothing seems to work. I am a
member of Administrators, Domain Admins, and Server operators.
I then said, OK, skip Audit and tried ROBOCOPY /E /COPYATSO
Now I get the files copied but I am the owner, not the original owner, and
error:
This security ID may not be assigned as the owner of this object on each
file.
Can anyone help me make an identical directory tree?