Imported Users

I have imported 1500+ users from an NT domain to a windows 2000 domain (including user home directory and data). The problem is that the home directory of each user is pointing to the old domain. Is there a way using a batch command or script that I can bulk modify the users on the new domain to point to the right location i.e.

\\oldserver\userhomedirectory
\\newserver\userhomedirectory