ok so installed zune and connect it to my xbox 360 wirelessly and it work some turned off the computer and it doesn't work so i reinstall it.and it works again so i do this a number of times lets say a lot and one day i press cancel when uninstalling zune i try to install zune but doesn't work so i try uninstalling it and is say like fatal error and something i try repair don't have zune.msi file because i got it off the xbox website and i cant find the so i need help and after i deleted zune and all the little suff and cant reinstall so what to i do cant uninstall cant reinstall