Would you please help me to create a very simple client server application, if yes so please listen to me:

i have two PC'S connected to the lan so i need to create an application where when i click a button on the first PC the event or action happen on the second PC, like when i click a button the label caption changes on the second pc.
I need the source code or a simple project which let me understand the client & server applictions
Thank you VB-WORLD members