Apple Macintosh System 7.5 - Manual (Page 41)

6 When you see the next confirmation box, click OK.
As soon as the confirmation box closes, open your Date and Time control
panel and make sure that the date, time, and time zone are all set correctly.
You now have access to PowerTalk services. The name of your Mailbox
changes to show that you are its owner.
To access other mail systems that support PowerTalk, you can install
gateways. Contact the software manufacturer for more information.
Setting up with a PowerShare server account
If you have access to a PowerShare server, follow these steps:
1 Choose Unlock Key Chain from the Special menu in the Finder.
If you wish, you can also open the Mailbox.
33 Installing PowerTalk