[Q] This is not a sgs2 specific question but you guys are the ones I trust so

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Just a quick note I am not really good with this but I can follow instructions and everything I know is from reading xda forums or from exploring and trial and error.
So I recently found a option in titanium to make a .zip so that when I install a new rom while I am there i can just install that .zip[ and have the full paid version of titanium there already when I boot up so I don't have to go to the market and get the free version then install my purchase key every time. Well I thought that was great. So I was wondering if there was a way to do that with another program. I use a program that backs up my apn settings and would like to get that on my phone as quick as possible also so the first thing I can do is fix my apn settings. I know that I can make a .zip file with root explorer and .tar files as well is that all I need to do? And where would I go to find the.apk to convert it? I would think it is in system\apps or something like that but I dont see it. So if some knows if this is possible and would be kind enough to post a how to I would be greatly appreciative. Thanks in advance.