Microsoft Windows Vista 30-Day Eval VHD
Not all of us have Vista installed on our home and/or office computer for different reasons, regardless
Microsoft Windows Vista 30-Day Eval VHD will enable you to test things without the need for liecence. Personaly i'm currently playing with new technologies on the Win2008 Beta3. But for those with less RAM, this option looks like the best option. This is really designed for large organizations who would typically be interested in buying , or testing their WebApplication on that platform ( just like with the XP VHD with IE6 and IE7 ).