Arduino Mega 2560 R3 + Ethernet Shield = DOMOTICS, please help!

i need to have guidelines to realize the project u find in the attached files of this post.

i want to realize a sketch that connects the ethernet shield to the website hosted on a srver (localhost or on the web, it doesen’t metter, i will adjust it) but i DON’t want to host the website (to control arduino) on the shield…

can someone help me? thanks, Valerio.

schema funzionale progetto.png