For the script automating the setup of lockscreen, check here : http://pastebin.org/83193
BUT, you're using this script at YOUR OWN RISKS!!!
I checked with dummy-dirs for testing purposes, but as I haven't my phone with me atm (shame on me), I couldn't test on my phone.
As I haven't a lot of time I won't be able to provide any support, or read whining post about "you broke my phone"/whatever

If you want to improve/modify/re-use this script, feel free to
enjoy.