I think all you need to do is this (providing I understand your original plan correctly):
Your new zc files are all inside a subdirectory you created, so that is fine, no need to create another one.
What I would do with regards to your database is to:
-
Using phpmyadmin, select your current working zc database (zc version 1.38) and export it (leaving default options of structure and data checked), select save to file and check gzipped. Save to your hard drive somewhere.
-
Still using phpmyadmin, go to home and create a new database using a new name for it. Then import the gzipped file you downloaded.
To update the database using the new zc files inside your sub-directory:
Note: this is based upon having uploaded all the files contained inside zen-cart-v1.3.9b-full-fileset-04302010.
- You will have no configure files, so you need to edit and upload the ones from your working installation. The edits are straight forward, add the testing sub directory name in all the paths, I think there are 7 places in the admin config file and 4 places in the includes config file. Edit your database name to the new one you created in phpmyadmin.
- Rename your admin folder to same name as you defined in your config file.
- Run zc_install.
If you don't see the option to upgrade database, then re-check your config file edits.