Can not perform ChatServer and ChatClient, help me!

hello, found problems when tried experiment chatserver , chatclient using 2 of pc (notebook , netbook)

i using arduino uno , arduino ethernet shield , pile up.
then have connect notebook uno using rs-232 , ethernet shield netbook using lan cable.
then compile chatserver in notebook upload it, compile chatclient in netbook.
then open serial monitor of notebook, show none.

is there wrong cable connection? or steps?
or lose step do? telnet?

i code of chatserver (http://arduino.cc/en/tutorial/chatserver)and chatclient (http://arduino.cc/en/tutorial/chatclient).
i insert mac address same ethernet board mac address.

this insert in chatserver:

code: [select]



...
byte mac[] = { 0x90, 0xa2, 0xda, 0x00, 0xfe, 0xac }; //same sticker
ipaddress ip(192,168,1, 27); // same notebook lan ip address
ipaddress gateway(192,168,1, 1);
ipaddress subnet(255, 255, 0, 0);
...


this insert in chatclient:

code: [select]



...
byte mac[] = { 0x90, 0xa2, 0xda, 0x00, 0xfe, 0xac }; //same sticker
ipaddress ip(192,168,1, 42); // same netbook lan ip address
...


anyone can me? i'm newbie in networking , microcontroller

vielen dank.

code: [select]

ipaddress ip(192,168,1, 27); // same notebook lan ip address

code: [select]

ipaddress ip(192,168,1, 42); // same netbook lan ip address

are saying ip addresses of notebook , netbook?

they should ip address giving arduino, , must different (in last number) other device on network.

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