Is there an App which replaces the default Keyboard Lock?

I want something similar, but I'd like to activate/unactive it via the keypad (NOT scrollwheel) - and I'd also like it to display my home background image only, with no text. The stock one when locked, displayed my owner infomation on a white background which I dislike.

Thanks

Hold the * key until locked. Hold again til unlocked.
Can't think how to solve your other question - bump.