It's alpha software, and probably pretty intolerant of much system variation. But it's a moderate ActiveX download, so if you have an appropriate machine (a reasonably beefy and modern Windows box), it's worth taking a few minutes for the distraction.
(And I must say: I'm really enjoying the new trend of technology previews. It seems to have become de rigeur for every big company to have a "Lab" site, showing off the alphas of what they're playing with right now. They're often more fun than the resulting products...)
