well you may be new to android but with 129 posts you are obviously not new to these forums so you should know how to search. and this goes in the themes section, not software and hacking. and if you had searched that forum youd have found the answer...you should try it some time.
the images you are looking for are in framework-res.apk in res/drawable. just replace them with whatever you like, then sign and flash.
all the answers you need are in the Android themes section. try searching there before posting next time, as it is QUITE LIKELY that whatever your question is, it has already been answered there at LEAST once...
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