Newsletter Signup Script Small Problem

[bartyl]

i am trying to create a small script for my blog, www.bartysblog.be where users can input their email address to signup for a newsletter or updates. the email address is stored in a database. the script byitself runs fine and stores the email in the database but when i copy to code into wordpress it doesnt work.
i think i know why but dont know how to fix it.
heres the code so far:
[!--quoteo--][div class=\'quotetop\']QUOTE[/div][div class=\'quotemain\'][!--quotec--]<?php

/**
*
*
* @version $Id$
* @copyright 2006
*/
$dbcnx = @mysql_connect("localhost", "bartyl_bartyl", "rudeboy");
if (!$dbcnx) {
echo( "<P>Unable to connect to the " .
"database server at this time.</P>" );
exit();
}
//Select Database here
if (! @mysql_select_db("bartyl_test") ) {
echo( "<P>Unable to locate the test " .
"database at this time.</P>" );
exit();
}
$result = mysql_query("SELECT Email FROM Users");
if (!$result) {
echo("<P>Error performing query: " .
mysql_error() . "</P>");
exit();
}

?>
<FORM ACTION="<?php echo $_SERVER['PHP_SELF']; ?>" METHOD=POST>
<P>Type your Email here:<BR>
<TEXTAREA NAME="email" style="width:200px" height:15px WRAP></TEXTAREA><BR>
<INPUT TYPE=SUBMIT NAME="submitjoke" VALUE="SUBMIT">
</FORM>


<?php
if ("SUBMIT" == $submitjoke) {
$sql = "INSERT INTO Users SET " .
"Email='$email', " .
"Date=CURDATE()";
if (mysql_query($sql)) {
echo("<P>Your Email has been added.</P>");
} else {
echo("<P>Error adding submitted joke: " .
mysql_error() . "</P>");
}
}
?>[/quote]

i think the problem is in the last section
[!--quoteo--][div class=\'quotetop\']QUOTE[/div][div class=\'quotemain\'][!--quotec--]<?php
if ("SUBMIT" == $submitjoke) {
$sql = "INSERT INTO Users SET " .
"Email='$email', " .
"Date=CURDATE()";
if (mysql_query($sql)) {
echo("<P>Your Email has been added.</P>");
} else {
echo("<P>Error adding submitted joke: " .
mysql_error() . "</P>");
}
}
?>[/quote]
the script only runs when the text, Your Email has been added is shown and in wordpress the text isnt shown. i need to change it so that the text doesnt need 2 run for the rest of the script to work
thanks in advance

[dcro2]

Well, for one thing, the correct syntax for SQL INSERT is:

INSERT INTO table_name VALUES (value1, value2,....)
not
INSERT INTO table_name SET column = value, column = value, ....

I don't know much about WordPress, so I'll leave it at that.