If your green border isn't displaying in IE6 or IE7 try this

I ran across this problem after doing a reset on IE7 under the Advanced Tab on Options, my green border stopped displaying.

Go to Tools…Internet Options
Under the Programs tab…go to Enable or Disable Browser Add-ons installed in your system
Click the drop-down menu arrow
Make sure Comodo Verification Engine is Enabled
Close out IE and re-open it
Your green browser border should display again.
This fix also works in IE6 since one of my buddies was having the same problem.

Hope this helps someone.

Thanks for that azwench, I am sure the information will be of help to many,