Laaz I'm the one who told you. The program is called CrashFX by Cino. You can't just google it to find it and you can go ahead and do that if you care to, it's a waste I believe. It doesn't work if you're trying to use it against a person with Trillian, and it's stubborn sometimes and you need to be patient. At times you can repeatedly keep booting someone off AIM where it will show that someone is sending you a file that looks like ".>" or something similar, and then your name. You just need to make another fake AIM name and then use this. The only way you can stop someone from using it against you if you have AIM is to block the person who's sending you this..... it's not that easy however, you only see who's sending the file to you for a second and then your screen freezes and AIM closes. Have fun with the program.
