You're in hell :), I don't really read all this code but:
why you use this?
<form action="success.html" method="get" />
maybe should be:
<form action="/Login" method="get">
... your inputs here
</from>
</form>
also isn't a parameter name this is *label*
String fn =request.getParameter("First Name");
see in your html
------------------------------------[HERE]
<td><center><font color="black"><b>First Name </b></font></center></td>
<td><center><input type="text" name="name"></center>
</input>
than try to run your page and see errors, maybe without errors no one can give you any solution.