How to enable Content Advisor in IE5
Step 1 - Navigate yourself to "Control Panel" and
double-click on "Internet Options". Next, click on "Content" tab. In
"Content" tab, click on "Enable" button.

Step 2 - Type in a password which you like to use. A blank password will not be accepted.

Step 3 - After you have entered a valid password, Content Advisor will
be turned on.