The thing is, it is technically illegal to modify JCS for the purposes of allowing it to unlock passwords. From your post, we can not decypher whether your intentions are to open your own levels or someone else's. I do not suspect that you have anything but good intentions, but nonetheless the best we can do is say that the program can be found fairly commonly and one can generally find it by asking around. However, beyond that, this is not the place to search for things such as that.

~ Traft