I am running XP Home sp2 and recently bought and installed NIS 2010. Was very happy till I tried to update Itunes and was informed that windows installer was either badly installed or that my computer was in safe mode. I reinstalled windows installer following a guide I found in yahoo answers and it reinstalled fine, but nothing changed. I then made sure on reboot that the computer was in regular mode, it was. Am very confused?? Any help would be greatly appreciated.