To expand on my argument, if you have to use IE6 or IE7 because your company says you have to, then that's a restriction you have to live with while at work. It's akin to someone complaining that they can't stop off for personal shopping while they're on the clock and being paid mileage.
You're free to do whatever you want on your own personal time. You don't have to shop online while you're at work (and it's a huge security risk to do so), so complaining that it's inconvenient doesn't really fly.