Microsoft Windows Vista 30-Day Eval VHD

For organizations with complex desktop infrastructures, whether large or small, Windows Vista Enterprise is the operating system designed specifically to help realize a better return on IT investments. In this VHD, you'll have the opportunity to road-test new and improved features including management (e.g. MUI, BDD, etc…) usability (e.g. Search, Navigation, etc…) and security (UAC, Windows Defender, etc…), enhancements to the Windows Vista platform.

Link:
http://www.microsoft.com/downloads/...