Newbie in Java and need support..

I tried to execute the code MyApplet.html using the command appletviewer but I encounter error in cmd prompt as shown below:
"load: class MyFirstApplet.class not found"
and also the applet viewer window popup error below:
"start:applet not initialized"
Could someone help me on this...

Please ignore this thread. Its ok now, I found the issue..
>> due to PATH variables setting..

Thanks