When you say unzip I reckon you are talking about .exe installers? Because a normal zip won't care about whether there's a Poser.exe present or not.

One thing you can try is to make an empty file called Poser.exe (just a text file renamed) on top of where your Runtime is (in the same folder as the Runtime) - that may trick the installer into doing what it's supposed to do: Install your paid content :)

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.