Can I get away with testing sites using IE8 with IE7 compatibility on?

Question

As a developer, can I safely upgrade to IE8 and use its IE7 compatibility mode to test how sites look in IE7? For IE6, I have a virtual machine and it is quite inconvenient. I d

Answer 1

Don't forget IETab for Firefox... making things that little bit easier. Though IIRC, you can only use this to test the version that's default on your system.