The directory / is the root of the server, public_html if it's Apache, the directory ./ is whatever directory you happen to be in, the cwd, the directory ../ is one directory up from the one you're in. To go two directories up use ../../ .
So you need . /iframehelper.html to access it from the main index.
Welcome to http://www.myphotowizard.net
where you can edit images, make a photo calendar, add text to images, and do much more.
When you know what you're doing it's called Engineering, when you don't know, it's called Research and Development. And you can always charge more for Research and Development.