ปัญหา Fatal error: Class 'COM' not found in ... รบกวนผู้รู้ช่วยแนะนำด้วยครับ

<?
		include("../phpConnection.php");
		$strSQL = "SELECT * FROM product";
		$objQuery = mysql_query($strSQL);
		if($objQuery)
		{			
				//*** Get Document Path ***//
				$strPath = realpath(basename(getenv($_SERVER["SCRIPT_NAME"]))); // C:/AppServ/www/myphp

				//*** Excel Document Root ***//
				$strFileName = "MyXls/MyExcel.xls";

				//*** Connect to Excel.Application ***//
				$xlApp = new COM("Excel.Application");     //มันฟ้องErrorบรรทัดนี้ครับ
				$xlBook = $xlApp->Workbooks->Add();


				//*** Create Sheet 1 ***//
				$xlBook->Worksheets(1)->Name = "My Product";							
				$xlBook->Worksheets(1)->Select;

				//*** Header ***//
				$xlApp->ActiveSheet->Cells(1,1)->Value = "Product ID";
				$xlApp->ActiveSheet->Cells(1,2)->Value = "Product Name";
				$xlApp->ActiveSheet->Cells(1,3)->Value = "Product Type";
				$xlApp->ActiveSheet->Cells(1,4)->Value = "Description";
				$xlApp->ActiveSheet->Cells(1,5)->Value = "Weight";
				$xlApp->ActiveSheet->Cells(1,6)->Value = "Country";
				//***********//
			
				$intRows = 2;
				while($objResult = mysql_fetch_array($objQuery))
				{				
					//*** Detail ***//
					$xlApp->ActiveSheet->Cells($intRows,1)->Value = $objResult["pro_id"];
					$xlApp->ActiveSheet->Cells($intRows,2)->Value = $objResult["pro_name"];
					$xlApp->ActiveSheet->Cells($intRows,3)->Value = $objResult["pro_type"];
					$xlApp->ActiveSheet->Cells($intRows,4)->Value = $objResult["pro_descr"];
					$xlApp->ActiveSheet->Cells($intRows,5)->Value = $objResult["pro_weight"];
					$xlApp->ActiveSheet->Cells($intRows,6)->Value = $objResult["pro_country"];
					$intRows++;
				}

				@unlink($strFileName); //*** Delete old files ***//	

				$xlBook->SaveAs($strPath."/".$strFileName); //*** Save to Path ***//
				//$xlBook->SaveAs(realpath($strFileName)); //*** Save to Path ***//

				//*** Close & Quit ***//
				$xlApp->Application->Quit();
				$xlApp = null;
				$xlBook = null;
				$xlSheet1 = null;

		}

		mysql_close($objConnect);	
?>