You really want to do that deleyd? Not trying to be a smart axx, but most people come to WinCustomize to find something better, more eye pleaseing than the MS provided look. It hasn't made much difference if the OS has been XP or Vista, folks just want to change the look.
You do understand that WB will only change the look or skin of the desktop, can't change anything like your Vista start menu to look like the XP start menu.
Visit the WB library here, it may take a little time to find something that meets your taste and yes you can find a few WB that will make you desktop look like Luna, not sure you want to do that though, atleast not without sunglasses.
Post back and let us know how you make out and what you found.