Fortunatly those three areas are within the same general vicinity of South Orlando. The airport is only about 15 minutes away from the Convention Center depending on traffic. It is basically a straight shot from the airport exit on Toll 528 to the International Drive exit. As far as Walt Disney World, it depends where exactly your are going within Disney as its a massive property, there are 3-4 exits on I-4 for the Disney property. In general, its only about a 10 minute drive from the convention center to the Disney area. If you are driving make sure you get a good updated map of the Metro Orlando area or print Mapquest directions.
The time it took you to type that paragraph you could of used google maps, lazy people!