Jusst checking visa situation and it seems for german passport holders you've got to get a visa if you travel on business, but none if you travel as a tourist. IETF is a tourist attraction of Buenos Aires, right ? Go visit the geeks, celebrate the Internet, that kinda stuff, write philosophical draft papers on the beach, right... ? Seriously: i've never tried to figure out at which point in time i'd need a business visa, i just did, but after the crazy paperwork for india, i am all for avoiding having to deal with yet another crazy visa if i can avoid it. Cheers Toerless