I would suggest using the auto installer deluxe, it comes with every app, dashboard etc.. around and is easier to install. You just need to burn an iso to a dvd then load it up in your xbox and away you go.
More info can be found here, post back if you have more problems
[URL=***********.xbox-hq.com/html/modules.php?name=News&file=article&sid=1481]Auto Installer Deluxe
ps. i have the torrent link for anyone who wants to download this.