I just wanted to write a quick note to let you all know that the RODC compatibility pack for Windows Server 2003 and Windows XP clients is available for download.
Description of the Windows Server 2008 read-only domain controller compatibility pack for Windows Server 2003 clients and for Windows XP clients
Not familiar with RODC?
check out these links:
Read-only Active Directory Features
Step-by-Step Guide for Read-only Domain Controllers