FP
With the greatest respect, if you have had to come on here to ask what kind of application you would use to do this, then I would assume that you are a novice. If you launch these kind of attacks without knowing what you are doing (ie how to manipulate IP traffic and hide your tracks etc), then you are likely to cause a great deal of trouble and you will probably end up with your ISP account being disabled and possibly blacklisted. Is it worth it?
Chris (putting his IT Security hat on)
[Edited by Chris L - 9/17/2003 11:26:58 PM]