how to connect sql server 2000 with codeigniter 1.7.2 with two computer

[eluser]Unknown[/eluser]
this is my code

Code:

$active_group = "default";
$active_record = TRUE;

$db['default']['hostname'] = "xeonserver";
$db['default']['username'] = "sa";
$db['default']['password'] = "";
$db['default']['database'] = "PAYROLL_HTI";
$db['default']['dbdriver'] = "mssql";
$db['default']['dbprefix'] = "";
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = TRUE;
$db['default']['cachedir'] = "";
$db['default']['char_set'] = "utf8";
$db['default']['dbcollat'] = "utf8_general_ci";

i get error:

A Database Error Occurred

Unable to connect to your database server using the provided settings.


when i run my script in my computer:
http://192.168.1.100/payroll/
error

I try change my default hostname with ip :192.168.1.3
error too.

Can you help me. Thanks