Problem with index.php on sub folder of server

[sovereing6]

Hi

Need to move existing Joomla site installation to a sub folder on the same server.

Presently my Joomla site is the default site.
http://www.videowebmastery.com

Created another site in html and would like this to be the default site
had to include the /default.htm extension.

http://www.videowebmastery.com/default.htm

Both sites on the same server.

The html site needs to be the default site.

I have copied the present Joomla site and placed this in a folder /Vidweb/

I am having an issue with the configuration of the index.php to get it to
work properly under the sub folder.

http://videowebmastery.com/Vidweb/

Error

Warning: main(/includes/joomla.php) [function.main]: failed to open stream: No such file or directory in /home/videoweb/public_html/Vidweb/index.php on line 33

Fatal error: main() [function.require]: Failed opening required '/includes/joomla.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/videoweb/public_html/Vidweb/index.php on line 33

I have attached the configuration.php and index.php for the /Vidweb

Would be so grateful if some Joomla wiz can tell me what I am doing wrong.

Thanks so much

Ken