AD Automount

Hello,

I am running Windows Server 2008 R2 with Active Directory. I have my Mac OS X 10.6.8 server bound to it. However, when I try and setup an automount for user home folders, it gives me an authentication error. I have tried the AD Domain Admin login a number of ways, such as "administrator@mydomain.local, administrator, etc". Or is it better to setup the AFP Home Folder Share in "Active Directory Users and Computers"? If so, how do I go about configuring that?

Thanks,

Steven T.