你那个IE文件怎么写的，可能是你也错了，也可能是你的IE不支持applet，下面是个例子，把它保存为html文件，可以直接打开，也可以用appletview。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
</head>
<body>
<applet
codebase = "."
code = "Dialogs.class"
name = "TestApplet"
width = "400"
height = "300"
hspace = "0"
vspace = "0"
align = "middle"
>
</applet>
</body>
</html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
</head>
<body>
<applet
codebase = "."
code = "Dialogs.class"
name = "TestApplet"
width = "400"
height = "300"
hspace = "0"
vspace = "0"
align = "middle"
>
</applet>
</body>
</html>
^@^