It's not extremely difficult, though it is involved. With the guide I sent him through pm he should be able to get it done; if he gets stuck somewhere, he can always ask for assistance and I would be glad to help.
I actually meant his lock screen plan is difficult.
Getting it all lined up, etc.
With that said, I have a version for you
Link Removed
Basically the lock screen has a 3/4 circle that you slide the lock to. Don't knock me for the circle as I am not at all good with images.
I can't give you a screen shot, so if you don't like it, just flash the original zip or version 1.1.