Frank your product functions fine.
http://burningtaper.org/photopost/index.php
Your asking code hacking or modification questions which fall outside product support. We have suggested several things for you to try but your post above clearly suggests you have not understood what we suggest you to do.
I suggested you make a copy of index.php from photopost and drop it in your site webroot and edit the one line at the top of the file which is this to reflect the path to find pp-inc.php
Code:
Content visible to verified customers only.
We have suggested in this thread and also in your helpdesk thread if you wish to have Photopost show on your webroot to actually install photopost on your web root.
You have not done so.
Or you can try your initial idea again just place the proper path to photopost index file in there like so
Code:
Content visible to verified customers only.