PHP & Excel file database เกิดปัญหาเมื่อไปโฮสต์จริงค่ะ

        $strPath = realpath(basename(getenv($_SERVER["SCRIPT_NAME"]))); // C:/AppServ/www/myphp
	$OpenFile = "MyExcelDB.xls";

	$strConn = new COM("ADODB.Connection");
	$strConn->Open("DRIVER={Microsoft Excel Driver (*.xls)}; IMEX=1; HDR=NO; Excel 8.0; DBQ=".$strPath."/".$OpenFile.";");

	$strSQL = "SELECT * FROM [Sheet1$] where Username = '$_POST[txtUsername]' and Password = '$_POST[txtPassword]' ";
	$objRec = new COM("ADODB.Recordset");
	$objRec->Open($strSQL, $strConn);

	If($objRec->EOF)
	{
		echo "Cannot";
	}
	else
	{
		$id = $objRec->Fields["ID"];		
	}
	
	$objRec->Close();
	$strConn->Close();
	$strConn = null;