Thanks Ruben,
I was looking at the different ways to get the script to execute from within an HTML page. I see I can add a line to my .htaccess to get all html pages to get processed as php, but didn't know if there were any downsides to that. Specifically, with my index.html page I didn't want to redirect to an index.php (or change the name) and have unentended Google consequences.
After some deliberation my plan is to leave index.html in place and make a new index.php which my server seems to treat as default.
What was the Tool you were referring to? Something to create the External Island codes? I'd really be interested in that. I've been searching here for direction on how to create one for a Random Gallery Image, but so far no luck.
