Can somebody help me: I can't send my sketh to that shield!!! I have a serial to usb connector, but in this shield there is no connection , right ??? how can I send my development?
The Arduino ethernet shield is like the ethernet card for PC. Without PC does not work. So you need "base" board with MCU.
You choose the Arduino Uno (2KB RAM) or Arduino Mega (8KB RAM) or Arduino DUE (96KB RAM) depending on the complexity of your project.