You're not alone. According to a 2009 Forrester Research study, 60 percent of companies are using IE6 as their default browser at work, as their IT departments are reluctant to upgrade and support a current browser. If you're in this situation, we've put together a letter you can pass on to your IT department. Just copy and paste it into an e-mail and customize it as you see fit. Get your colleagues to send a letter too.