We're running Outlook 2010 on Windows Vista. When we look at our contacts in 'business card' view, the alphabetical index on the right hand side is all in Arabic letters. Some machines are able to switch this back to English using a small button at the bottom of that column. The button looks like a person next to a blue/green globe of the world. But other machines are stuck in Arabic and don't even have that button. The result is that those machines can't easily navigate within the cards.