IE7 is now available, so IE6's days are numbered. I've been running IE7 Beta for a few months now at home, and like it. It's basically Firefox without the extensions, or IE6 with tabs, RSS capabilities, and better (i.e., more standards-compliant) CSS handling.
You can download this now on your work computer, or just stick with IE6 if you're happy with it. I've downloaded IE7 to test pages on, but as far as I can tell, there's no way (or at least, no easy way) to run both IE7 and IE6 on the same machine. This means I (and you, if you're an IE7 user) need to test pages both on my normal computer and a second computer running IE6; we've historically designed for whatever browsers we offer on our public computers, and that will probably remain IE6 for some time. In case you're wondering, I haven't seen any problems with any of our sites on IE7, although I have seen some minor differences compared to IE6.
If you're interested, here's a link to some blogger commentary:
http://getahead.ltd.uk/blog/joe/2005/07/29/ie7_reviews.html
-Michael
