Installing and upgrading help

I tried installing moodle on my server and I recieved this error on my page:

Notice: Undefined variable: CFG in /home/activere/public_html/elearn/lib/setup.php on line 18

Fatal error: Failed opening required '/lib/adodb/adodb.inc.php' (include_path='') in /home/activere/public_html/elearn/lib/setup.php on line 20

Fatal error: Call to undefined function: get_string() in /home/activere/public_html/elearn/mod/resource/lib.php on line 11

Here is my config.php info=

$CFG->wwwroot   = "http://www.activereactive.com/elearn";

$CFG->dirroot   = "http://www.activereactive.com/elearn";

$CFG->dataroot  = "http://www.activereactive.com/elearn/elearndata";

Thanks for taking the time to help me out