For just a bunch of bells and whistles, this program is far too CPU demanding; especially considering that [despite sincere efforts] some of the Vista UI effects are replicated rather poorly (lack of blur in transparency being one of them). I would definitely not recommend this download because I imagine two possible scenarios by the time this project is [more or less] perfected: either Vista will become stable enough for XP users to switch to, or the Vista GUI style itself will grow out of fashion ("Nothing is certain but change").

It’s certainly nice that someone invested time in writing a free peace of software that allows for mimicking Vista’s GUI on XP. However, do not expect to see an accurate simulation. Title bar transparencies, for one, are not replicated. The address bar feature, which allows for Vista user to any level of the path by clicking the corresponding area in the address string, is also not retained.
Nice effort though. Thank you!