Web browser auto fill is only available for Internet Explorer 8 or better.
•Download (here) & install the Internet Explorer Extension
•Start Internet Explorer
•If prompted to enable, make sure to enable
Enable Password Vault Manager For IE add-on
•Restart Internet Explorer
•Open Password Vault Manager if not already started
•Open a web site that has been configured in Password Vault Manager, you should have the username & password automatically populated and both text boxes should now be light-blue
Sample web site populated with Password Vault Manager auto fill feature
Double check that the add-on is in fact enabled. In Internet Explorer Manage add-ons window.
Enable/Disable Password Vault Manager for IE