Windows Vista
 

We are looking to upgrade, and it turns out that Dell now only ships computers outfitted with Vista. Has Vizard been tested in Vista? Does it work? Are there any gotchas?

We've used Vizard on Vista and it mostly works fine. There is some issues with licensing and Vistas UAC. If you plan on disabling UAC, do it before you install Vizard. If you install and license Vizard then disable UAC, your license might become invalid.