Java Applets not running in Any browser

Hi,
I have JRE / JSE (1.6.17) installed on a windows 7, 32 bit Intel Machine.
I am able to do all the programming and stuff (in Java), but when i try to open a web page with a Java Applet, it just does not show.
The page gives a message saying that an additional plugin is required.
I tried, Google Chrome, Firefox, Internet Explorer...all have the same problem.
The environment variables are correctly set.
This is something completely new for me, so would appreciate some help

Actually i think its more related to JRE.
I was actually referring to general applet loading.
I cannot open any applet in any browser.

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<body>
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<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
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