Apple Macintosh PowerBook 145 - Manual (Page 208)

If a message tells you that you cannot change your password,
your network administrator has turned off this feature.
3. Type your current password. Then press Tab and type a
new password.
A bullet (•) appears for each letter you type.
4. Click OK.
5. Click OK in the dialog box that appears.
6. Retype your new password and click OK.
Your new password is now in effect.
192 Chapter 12: Using Your Computer on a Network
Click here to change
your password.