You can't put a <form> inside a <table> (at least, not without a <tr> and <td>!). Delete the <table>.

You have used "smart quotes" -- the curly, typographically correct ones -- to quote attribute values. Nasty. Use the basic " instead. This is probably a copy&paste error from MS Word or similar.

<u> is deprecated. Use CSS text-decoration: underline instead.

Close all your tags! You're even missing </body> and </html>.

Now some general advice: don't save up errors like this; deal with them as soon as they occur, and it will be easier. Get HTML validator for Firefox.