First, I'm going to pre-load the images used in these presentations -- that's the dots that are appearing below (I'm loading them into your browser's cache, but not displaying them). For maximum smoothness of presentation, you should allow this to complete before continuing.

Fast communications (e.g. Direct LAN connection; 56kbps modem)
The Best (in my opinion)
The Second Best

Slower communications (e.g. 33kbps modems)
Third Best
Fourth Best

Slowest (e.g. 28.8kbps modems -- still not too shabby)