Vista Transformation Pack 4.0 was just released and it does a great job of giving your XP machine the Vista look. In December last year Windows Blinds released a new version of their software that was designed to provide Windows XP with transparent effects, however, it wasn't free. That is where the Vista Transformation Pack comes into play. It is free and does a great job of giving my machine a look similar to Vista. It doesn't have the powerful transparency effects for every window (as seen on the window to the right in the screenshot above) but does have enough transparency to make me happy. The greatest thing is that it is free!
Tools and Utilities
Product page: here