Steven,
Can you clarify if you are trying to import contacts or migrate accounts? If you are importing contacts, you can follow the steps outlined in
this KB article. If you are trying to import domain accounts and want the new users to have certain default settings (i.e., enable pop retrieval and not to be shown in global address book), follow these steps:
Before importing the new users, login to the domain(s) into which they will be imported as a domain admin. Under Domain Settings | Advanced Settigns | Default User Settings, ensure that "Enable POP Retrieval" is checked and that "Show in Global Address List" is unchecked. Save these settings. Now you can go to Domain Settings | Users and click on Import and follow those instructions. Please note, if you are using SM 14.x, there is a non-breaking interface "bug" on the first page of the import wizard. You can safely ignore the Contacts drop down list. This has been remedied in the next minor release of SM 14.x.