Can I change my private key password without getting a new Unipass?
Yes. Your private key password encrypts your Unipass private key. You can change this password (thereby re-encrypting your private key) using the program you used to create it. For example, with Netscape you can change your password from the “Passwords” dialogue accessed from the Security Preferences menu. You should immediately change your password if you think someone else may have learned it.