Changing domain name & site name

I set up my site on my home machine to test but I now I need to change the domain name and site name before I upload to my site. Tutorial 99 mentions that I need ZC-install when I upload to rename databases etc, except I have already deleted ZC-Install. How can I do this?
and Randy The Good Shepherd Store said:
Download zen cart again from here and find the install folder. Do it just like you did before.
So I copied the zc-install file to my main directory but how do I get the install to run again? I tried to re-run zc-install every-which-way with no luck. What am I doing wrong? Help please

https://www.zen-cart.com/tutorials/index.php?article=99

Yes; but but how do I get the install to run again? I had deleted same, and now I tried to re-run zc-install every-which-way with no luck. What am I doing wrong? Help please

1. Upload your local folders/files to the root of your website
2. Create a local backup of the database using your local phpMyAdmin
3. Create a blank online database using your web hosting control panel
4. "Import" your local database backup into the blank online database using the phpMyAdmin provided by your hosts
5. Edit the two configure.php files manually to use the domain name and online DIR_FS pathways
6. Password Protect the Zen Cart 'admin' folder using the Password or Directory Protection in your web hosting control panel

This is a manual installation which does not require you to run the whole Install procedure again.

Vger

Thanx a bunch - will save me a ton of work