Try Entrust Extended Validation (EV) SSL
Entrust is proud to be the first secure sockets layer (SSL) vendor to leverage Extended Validation (EV) SSL certificates to turn the URL address bar green for both Windows Vista and Windows XP users with the help of the Entrust EV Updater technology.
To view the EV SSL certificate in action, users must be running Microsoft Internet Explorer 7*, Firefox 3.0 or Opera 9.5.
* For Windows XP users, EV functionality in Internet Explorer requires that the Phishing Filter be Turned On for automatic website checking. If you do not see the green URL address bar when trying the demo, and are running Internet Explorer 7, this setting might be turned off. Please check the Phishing Filter settings in the Advanced Tab by clicking Tools > Internet Options > Advanced.