The World Bank talk about OLPC in South America will start at 12:30PM EST / 4:30PM GMT / 6:30PM CEST and as previously announced we'll be streaming it live right here:

Please note that we'll also be monitoring Twitter for the #olpcSAbriefing hashtag so if you have any questions or comments during the talk then please make sure to include that hashtag.

Update: The slides I'll be showing are now available here.