Moving DNS Secondary Zone to Win2k

i have DNS Primary zone & Secondary Zone running on UNIX Servers .

Now am to replace the Seconday Zone on unix server to Windows 2000 Server. Primary DNS will remain on the current UNIX server. only the secondary DNS Server is to be replaced by Win2k Server.

How to configure this new Win2k Server as seconday DNS to the existing Primary DNS on UNIX Server ?

Thx in Advance