You probably need to repair/update your install of the java/vm; advice is
available at the URL below:
http://www.mvps.org/inetexplorer/answers_9.htm#java2

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Sandi - Microsoft MVP since 1999 (IE/OE)
http://www.mvps.org/inetexplorer
> Had a crash and reinstalled Win98 since...when using
> Explorer 6 applets won't appear. Tried another navigator
> and they work there. Any ideas how to fix IE6?