Joomla!®Plug

I'm running Joomla 1.0, I have received the following error when I tried to manually restore my site on another service plan:

Warning: require_once(includes/joomla.php) [function.require-once]: failed to open stream: No such file or directory in /home/u2/brucelamb/floorandwalltv.com/html/index.php on line 26

Fatal error: require_once() [function.require]: Failed opening required 'includes/joomla.php' (include_path='.:/usr/local/share/pear&#039 in /home/u2/brucelamb/floorandwalltv.com/html/index.php on line 26

Btw the data base did not restore either, I read some of the threads about contacting my provider about this but this message does not look like a database problem. What do you guys think.

Thanks
Alfonso