Search for new domains. Select this to make the PST Locator task search for new domains. Once the task has found domains you can edit the domain list on the Domains tab to specify which domains to search for computers.

Search for new computers. Select this to make the PST Locator task search for computers in the domains that you have selected on the Domains tab.

Registry search. Select this to make the PST Locator Task scan the registry on computers that it finds, looking for PST files that are listed in Outlook profiles. This is much quicker than scanning the hard disks. You are recommended to use this method initially and then later scan hard disks.

Hard disk search. Select this to make the PST Locator task scan the hard disks on the computers that it finds, looking for PST files. This method is slower than scanning registries. You are recommended to use Registry search before using Hard disk search.