One point: On Vista the %windir% folder is just the "Windows" folder... isn't it?... And that's the only way to locate it when you extract it...
1. So... how is the taskbar different? It seems the same to me...
2. Yay transparency!
3. Yay shell style!

Oh and vista is so annoying... I extracted the files to desktop (Extracting to the Themes folder didn't work) and then I dragged them into the folder, and first vista asked me for administrative permission to move them, then the screen went black for about 5 seconds, then it was greyed and it asked me again for permission for a file action, and then the screen went black again for another 5 seconds, and then it finally moved them.
ARGH!!!