My Kindle is version 2.2.1. I used the unistaller .bin in the package found in
this thread. I'm not sure where I got the original installer, but I'm fairly certain it was the same package. I have another screensaver hack tar saved on my computer called "screensaverhack-0.1.tar" and there's a possibility it was this one I installed. I can't test it out yet, unfortunately, as I don't have my cable with me.