Apple Macintosh System 7.5 - Manual (Page 33)

5 Type your name and the password of your PowerShare account as set up by your
system administrator.
As a convenience to you, PowerTalk software initially sets your key chain
access code to be the same as your PowerShare password. (You use your
access code to open all services.) You can change your key chain access code
in the PowerTalk Setup control panel.
IMPORTANT Changing your key chain access code does not change your
PowerShare password. You’ll need to use your PowerShare password when
you check your mail from a computer other than your own.
6 When you see the confirmation box, click OK.
After a moment another confirmation box appears with additional
information. Click OK.
You now have access to PowerTalk services. The name of your Mailbox
changes to show that you are its owner.
27 Installing PowerTalk