[Q] Modifying lockscreen on JVU?

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Is anybody familiar what should I change in framework-res.apk if I want to change JVU default lockscreen fond and/or type because not it writes:

"mon. 16 01 .." and it is really ugly. I want to change it to "mon. 16.01.2012." or "mon. 16.01." or at least without two dots in original ROM: "mon. 16 01".

Thanks.