OS - All Windows Platform
Hardware - Intel

-Uninstall NS6 from your machine
-Install JDK build 80 on Windows
- After installation is complete go to Control Panel
- Double Click Plugin Control Panel
- Select Browser tab and select both IE and NS6 options checkboxes
- Click Apply , A Warning JOptionPane will pop-up saying
"Unable to change settings in NS6 , please check if you have login as a user who have sufficient permissions to change system settings "(see attached snapshot)

Error message is wrong , it should be "Netscape is not installed on this system"

Forgot to add snapshot attaching it now .
 

###@###.### 2001-09-24

verified in build 83
Error message is more descriptive now and give hint to user
"Check if Netscape6 is not installed "

###@###.### 2001-10-12