A new censor

[thefluke]

We're looking to get some help getting a more powerful censor for the boards. We have some very.... creative users at our current boards, and they seem to find joy in going around the censor we have in place.

The default censor just isn't powerful enough for what we need, and seems to be case sensitive (not sure why that is :/ ).

Anyway, her'es sort of a shopping list:
A configurable filterwith the user's ability to turn the filter on and off with the following conditions:

1) words wich will always be censored, regardless of weather or not the censor is on or off for the user.
2) the ability to replace words using it
3) no limit on the number of charachters in the censor (currently 250 max)

A copy of our old censor is here. Some of the symbols in there were to prevent users from using them in thier names (it tended to break the search function). The websites are generaly links to keyloggers or files with virii in them, and all of those pictures are links to those pictures that seem to find their way onto every respectable forum at least once (tub girl and that one gentleman who is... well, I'm sure you've seen it.).

Anyways, can anyone give us a hand?