arduino UNO and W5100

Hi Dear members;
I need connect a W5100 to an UNO.
my W5100 doesn’t have mac address. please send me a runnable code for this application.
thanks

dallasjane:
I need connect a W5100 to an UNO.

There is plenty of information available on how to connect it.

dallasjane:
my W5100 doesn't have mac address.

You can just make up a MAC address. The only important thing is that it's unique on the network.

dallasjane:
please send me a runnable code for this application.

You will find several nice example sketches in the Arduino IDE under File > Examples > Ethernet.
Here are the tutorials to go along with them: