maxfun03

I have a small problem I wanted to install additional plugins wich where NoItem, Crazy- Core/Login and Safe Creeper, none of those worked (they where downloaded directly from the bukkit site). And yes I'm aware that Bukkit seemingly has a some kind of Safeguard but I'm not sure how to counteract it or if it even exists in the Tekkit Server variant so I wanted to ask if somebody could help me solve this problem. It also could be that I'm just utterly stupid and forgot something.