I'm flying into Vienna (VIE) in a couple of weeks. Does anyone know if I can buy a pre-paid SIM card for my cellphone at the airport? I looked on the airport's website and was unable to decypher the "shops" page. The alternative would be for me to buy a card here in the US before I leave, but I've not had a good track record in other countries.

FYI, my phone is unlocked and has all four GSM frequencies, so I know it will work OK with the right SIM.

Thanks in advance.