Inside this video tutorial I will show you how to block internet explorer 6 (Aka IE6) inside your Joomla Websites.
Now just keep in mind that some professionals out there recommend you to just display a warning message, however in here I will show you how to totally block this browser like I did inside this blog CMSTeachings.
CMS Teachings is blocking IE6, see picture below.
Also another quick note, you will find several plugins out there to accomplish this similar effect and ultimately it will be your decision if you want to use those plugins or follow my instructions.