It’s amazing how many of you beg people to tell you instead of figuring it out yourself. A script kiddie down below mentioned that he uses Sub7 and then some other clown comes back at him and names another comercial trojan that anyone’s software will detect. Do yourselfs a favor and read a book, go outside, or at the very least just turn off your computer.
However, if you’re really set on doing this (why though? what does it get you?) learn a programming language and write your own trojan. Send it to them and use whatever options you have built into it.
This should work if your friends are half as dumb as you lot. Hell if they’re a quarter as dumb as yal, they’ll delete their virus software on your command after sending them Sub7 or heck, a file named trojan.exe.
If you want to break into someone’s computer without using cowardly techniques like trojans, get a linux, and learn networking, programming, and encryption and you’ll be almost halfway on your way to being able to do this.
Finally, practice hacking yourself on different encryption settings (no not WEP, that’s not even encryption). Once you are half-ass competant at that (5 years+ from reading this) you’re ready to hack that friend, who you probably haven’t spoken to since reading this because you were too busy studying cryptology.
Hack their computer now, and pop their cd-drive! Go ahead! And get a good breath of fresh air, trust me, the police are on their way to your house, because you forgot to spoof your ip, dumbass. While you’re in court, please don’t mention this because I told you this story for a reason.
Hope this helps you, n00bs.