Windows-infested, LOL. I think if Microsoft had simply been creating a "compliant" browser all along, rather than trying to re-write internet standards, they wouldn't have had such a hard time creating a standards compliant browser.
My current work computer is also still IE6. Microsoft got themselves into such a hole with all their proprietary functionality that no company can afford to update for fear of losing half their internal websites and utilities. I browse the web with Opera, but have to fill out my timecard with IE. IE8 supposedly has a backwards-compatability feature, which may be what they are still trying to test out. I doubt they even remember half the crap they put into IE6 to be able to duplicate it under IE8.