Hizbullah or Hezbollah?

Osama or Usama, frankly I can't keep up. I am not kidding, I have seen Hezbollah spelled 4 different ways in the media in one day and Bin Laden's name spelled at least 3 different ways since he stuffed his coward arse in a cave sometime after 9/11. So what is up with these silly Arab names and there different spellings? We at Uncle Tim's are determined to find out for you.