rewrite rule on plugin activation

finally I completed, using this below hook

mod_rewrite_rules

function output_htaccess( $rules ) {
$new_rules = <<<EOD
RewriteEngine On  
RewriteCond %{SCRIPT_FILENAME} !-d  
RewriteCond %{SCRIPT_FILENAME} !-f  
RewriteRule ^(\w+)$ ./index.php?id=$1


EOD;
return  $new_rules . $rules;
}
add_filter('mod_rewrite_rules', 'output_htaccess');