For informing the reviewers you use the bulk mail function.
Please go to:
Overview => Bulk E-mails => Send E-mails to Reviewersto send them an e-mail with all the
information required for the review process, including the
deadlines.
You can and should also send them their
user names in this e-mail.
Please note that you can only send them their passwords, if they have not logged in yet, otherwise the passwords are already encrypted and they will see a hint text and a link to the "Lost Password?" page.
You can also use this function to remind the reviewers who have not completed their reviews shortly before the deadline.
For more detailed information on how to use the bulk e-mail function please refer to:
http://www.conftool.net/en/administrator_documentation/bulk_e_mails.html