Description:
------------
We purchased a product which was developed under PHP and Mysql environment. We are new to php environment. The purchased product said to run under PHP version 4.1.0 or above. When we running the application it generates lots of warnings and notice as below. Kindly help us to come out from this flaw.

Reproduce code:
---------------
<?PHP
#############################################################
## iDevAffiliate Version 4.0 - Copyright by iDevDirect.com
## Site: http://www.idevdirect.com/
## Support: http://www.idevdirect.com/support/
## Email: support@idevdirect.com
#############################################################

	$install_directory_name = "idevaffiliate";

######################################################################

// Leave the following settings alone unless you experience errors.  
// Before adjusting, see step #3 in README.txt.

// AUTOMATIC PATH SETTING - Do Not Adjust!
// If This Doesn't Work Use The Manual Path Setting Below
$path = $_SERVER['DOCUMENT_ROOT'] . "/" . "$install_directory_name";

// MANUAL PATH SETTING
// Comment The Above PATH and UN-Comment The Below PATH
//$path = "D:\sss projects\idevaffiliate";

// ################### DO NOT EDIT BELOW THIS LINE ###################
include("$path/config/database.php");
if ($_REQUEST['cfg']) { include("$path/config/updates.php"); }
$color_sheet_data=mysql_query("select * from idevaff_colors");
$color_sheet=mysql_fetch_array($color_sheet_data);
?>

Expected result:
----------------
It should show a User name and password controls and a login button.

Actual result:
--------------
Notice: Undefined index: DOCUMENT_ROOT in D:\SSS Projects\LRBIKEscom\www\idevaffiliate\config\config.php on line 18

Warning: main(/lrbikescom/www/idevaffiliate/config/database.php): failed to open stream: No such file or directory in D:\SSS Projects\LRBIKEscom\www\idevaffiliate\config\config.php on line 26

Warning: main(): Failed opening '/lrbikescom/www/idevaffiliate/config/database.php' for inclusion (include_path='.;c:\php4\pear') in D:\SSS Projects\LRBIKEscom\www\idevaffiliate\config\config.php on line 26