Re: How to clean up default install by removing example related files?
The only part of Zen Cart that you want to remove for a "clean" install is the images as you have been told twice.
Do NOT remove any of the .php files or you will break things. The rest of the data is stored in the database and as long as you have not said yes to the demo products during installation you are clean.
Please do not PM for support issues: a private solution doesn't benefit the community.
Be careful with unsolicited advice via email or PM - Make sure the person you are talking to is a reliable source.