I've found that signing up for a Microsoft tech net subscription is a decent way to get access to various os/browsers without having to deal with any timed expi

I've found that signing up for a Microsoft tech net subscription is a decent way to get access to various os/browsers without having to deal with any timed expirations. You can download any of the currently supported Microsoft OSs and setup a bunch of virtual Machines. Plus, office and other application software is available as well. I'm certainly not thrilled with this setup as I wish Microsoft could just allow different IE versions to be installed side by side. But the subscription cost is $200 in the US, so basically if you were planning to by a license to any piece of Microsoft software you might as well get this instead.