If you want to build a Trojan, you first have to download Dark-Comet. This is a program which allows you to control other people over your network. When you download it make sure you turn off your Anti-Virus, because this program "produces" Trojans/Viruses. Next step is, to make a exeption in your Firewall, to tranfer data to or from the victim. Also you have to configure your Router and put an UDP and TCP Connection to the port: 1604, which is the standart connection port for this application. Under modules you can now select and build your server application, and make the victim execute the file. If you done it right the victim should automatically connect to your pc (if you put the right ip in the server settings) and you can now enyoy full control. But the victims Anti-Virus can block some controls and make it harder for you. At least: Dont use this to People who disagree with using this program on their pc.

 If you have any questions ask the stuff, which is online during week and will see your questions and at least reply to you after ca. three days.