HERE YOU WILL FIND ALL INFORMATION REGARDING TROJANS
->All the popular trojans will be easily detected by AV ,Dont worry there are tools cutters-joiners/binders,bit addition tools which will help you ( links and information regarding this tool watch the tools page)
->Firstly you need to select the trojan of your wish .To take a decision on trojans read below information about trojans
->In most trojans there will be two parts
1.Server
2.Client
Server should be sent to victim in disguised mode ,Client should be installed in your system
->Disguise mode above refers that you need to bind your server part with some other exe using exe-binders so that it cant be recognised as a virus by AV
->once you send trojan and hopefully victim runs it then all you need to do is connect to the server part using IP adress of the victim