wake on lan(nice toooooooool)

 http://www.codeproject.com/KB/IP/WOL.aspx

How does it work

While your computer is Turned Off, The Network Interface Card remains on and looks forward to hearing a message! More accurately, a packet does, which is called a magic packet. Whenever the card receives information, a magic packet tries to switch on the computer. This packet must contain a certain byte-sequence, but can be encapsulated in any kind of packet (IPX, IP, anything). So the mechanism relies on the Hardware's ability, and that's why we need some ingredients!