How do I transfer DNS zones from a 2003 server to RH Enterprise Linux Serve

I would like to know how to transfer DNS zones records from a Windows 2003 AD Server to a RedHat 5 Enterprise Server? The 2003 server is set as master (soa), while the RH Enterprise server is set as a slave. I need these servers to coexist in the same network, and speak (dns) with each other. Thanks, Jeff