When you import a user for AD, you have to specify the primary domain controller that will be used for authenticating the user and have the choice of adding secondary DCs.  Is there someplace where you can see what this is set to?  We are doing to be decommissioning one of our AD servers and want to verify if any of the accounts are pointing to it as the primary or secondary DC.  Also, is there a way to change this if we want?  I haven't been able to find a place where you can see what the DCs are for an account, and I'm hoping I'm just missing something.  Thanks.