installing SohoLaunch Pro Edition / Gallery

so i tried installing Soho Launch Pro edition and I also tried installing Gallery
I entered all the necessary info and I got the following error:

The installation can not be completed:

- You chose to install in the main directory of the domain freshfotography.ca, but there are conflicting filenames, therefore we can not proceed. Following filenames already exist in the main directory of the domain freshfotography.ca (path="/home/fres7343/public_html/").You must manually remove these files before proceeding with auto-installation:
fantversion.php

Where do I find these files and how would I delete them?