Really sorry for sounding so dumb, but I'm looking at the directory you pointed me to in Coda and I can't for the life of me see any HTML files.
If I go here: webassist/themes/[yourtheme]/templates/ I see admin.dwt.php index.dwt.php install.dwt.php and page.dwt.php
I see a folders under [yourtheme] call css, images, plugins, templates and that's it and not a single HTML file anywhere in the [yourtheme] directory structure. I'm assuming the file you were referring to is "index.dwt.php"?? Not sure how to edit it as HTML/CSS. I can't even preview it in Coda to see what it looks like.
Am I lost and in over my head or am I looking at what you were implying and just don't get it because it's buried in PHP?
Sorry to appear ignorant! I'm really trying to get a handle on PowerStore and how to use it!