Never said he was getting into safe mode, I said 'If he's managed to try Safe Mode..'. As well as the link Zing suggested you could try building a
Ultimate Boot CD 4 Win (modified bartPe boot cd), which boots into an XP environment straight from a CD (much like Linux 'Live' CDs) and has a restore program on it which can use the windows restore points to try and get the machine up and running. It also has loads of other stuff to try and diagnose problems.