Testing in IE6 and IE7, best way

I need to test sites in IE6 and IE7. What's the best way to do this? I have VMWare Fusion, should I just make a snapshot with IE6 installed and a snapshot with IE7 installed?

I know there's also this: http://blogs.msdn.com/ie/archive/2006/11/30/ie6-and-ie7-running-on-a-single-machine.aspx

Has anyone tried that running through either VMware or Parallels? It seems weird virtualizing again inside of virtualization.

And I know there's a way with Crossover to do this but is that really render accurately? I'd rather see the site the way a surfer with IE6 installed out of the box sees it.

Hmm and one other way I guess would be using http://www.vmware.com/products/converter/ which claims it can convert Virtual PC images, so I could possibly use it with the free Microsoft one?

weaponofchoice said:

it's so much easier to run ie from mac os itself, don't you think?

http://www.kronenberg.org/ies4osx/

Click to expand...

Does that give you IE6 exactly like it would be for someone using it natively on Windows though? Specifically I need to know that sessions and forms are treated exactly the same way, not just rendering.