Exception when opening a excel file in JFrame

Hello,

I have a problem when trying to display a Excel file in a Jframe. The exception is like this: com.jniwrapper.LibraryNotFoundException.

here is my code

public jexcelTest1() throws ExcelException{

        JFrame frame= new JFrame("Test application");
        frame.setDefaultCloseOperation
        (javax.swing.WindowConstants.EXIT_ON_CLOSE);
        Container cp = frame.getContentPane();
        cp.setLayout( new BorderLayout());
        JWorkbook workbook = new JWorkbook();
        cp.add(workbook);
        frame.setBounds(100, 100, 500, 500 );
        frame.setVisible(true);
    }

And the exception message is:

Exception in thread "main" com.jniwrapper.LibraryNotFoundException: Cannot find JNIWrapper native library (jniwrap.dll) in java.library.path: C:\Program Files\Java\jdk1.7.0_05\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Broadcom\Broadcom 802.11 Network Adapter\Driver;C:\Program Files\WIDCOMM\Bluetooth Software\;C:\Program Files\MiKTeX 2.9\miktex\bin\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files\Java\jre7\bin;.

I already added the following libraries: comfyj-2.8.jar, jexcel-1.5.jar, jniwrap-3.8.2.jar, slf4j-api-1.5.8.jar, slf4j-simple-1.5.8.jar, winpack-3.8.2.jar

Can you clarify this for me please.

Abdousoft.