how to change your password:—-Log in to Gmail.
Click Settings at the top of any Gmail page, and open the Accounts tab.
Click Google Account settings.under Google Account settings
In the new window, click Change password under the Personal information option.
Enter your current password and your new password.
Enter the new password twice, under New password: and Confirm new password.
Click Save.
Step by Step Screenshot Walkthrough By Heinz Tschabitscher, About.com
Make sure to browse with Opera 10 beta 2 in Opera Turbo off mode ,in this way you can protect yours privacy do not log in using opera turbo on ,you may also use other browsers such as Internet Explorer8 ,Firefox or Chrome .