It really doesn't matter where you create a "dummy runtime" for zips. I have it on my desktop, one folder called Runtime, in that the necessary folders (and I do delete the ones that aren't needed in the current package - for instance there is no "character" folder if I package up a prop) I place the things in that where they should go, then out on my desktop I rightclick the Rumtime folder and choose "Add to Runtime.zip" from the rightclick menu. It then makes a zip called Runtime with everything in place. Then I rename the new Runtime.zip to reflect whatever is in the zip. That's the fastest way. And yeah, what Dale said: Send it to someone to test, at least untill you're confortable with how you do it :o)

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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.