What's the point of this conversation?
"how to take down websites" has nothing to do with the topics covered on this forum.
And please don't give the OP stupid ideas about using kiddie tools, because he might try them and get caught in a second.
"firewalls" "apache configuration".. etc. Yes these can protect you from the methods that need a connection to the server to overload it and most of these kiddie style methods.
I'm afraid someone will give him a real advice or worse, a tool ready to use. It's like giving a loaded gun to a chimpanzee.
Very bad idea.
If the OP wants to know how to take down any website the only advice I can give is to get deep understanding about various tcp stack implementations, bgp and things like that. Start reading and learning. Will take some time. As soon as you have deep understanding on this field you just don't want to do it.
This time is better spent learning a lot of other useful things on this forum.
This is not the place of hacking discussion.
This thread should be closed. It's pointless and potentially dangerous for the OP mostly.
My offer is still valid however: PM me your site, it wil disappear in a second. Without a single connection to it. How would you feel like then?
Think about it.
Destruction will get you nowhere. Try to build instead.