Test Your Site in IE6 The Right Way–With a Free VPC Image from Microsoft
As I have noted many times, the standalone Internet Explorer implementations are hacks that are best avoided. Alex Russell, leader of the Dojo project, explains the reasons quite eloquently. The recommended practice is to use Microsoft Virtual PC to run IE6 in a virtual environment. Which, for some, was a bit of an issue as it required another license for Windows–not everyone is blessed with an MSDN subscription.