I'm working on setting up some VMWare Fusion (2 beta) installs of windows XP Pro, and wondering what type of web dev setups I should be looking at. I will not actually be developing on the vms, but testing/debugging IE 6 and 7. My initial searches made me think it would be best to make a separate vm for IE 6 and 7, in order to have "true" versions (non emulated) of each. Is this true? Also, what dev tools should I look for that would ad firebug and web dev toolbar functionality to internet explorer?