Some problems with cookies

[Pie]

I'm trying to get this piece of code which handles user logins to work. The process is simple - User registers and gets sent confirmation email. Clicking on the link in the email will bring them to a page where they're verified and logged in. The problem is I keep getting warnings:

Warning: Cannot add header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\test3.php:2) in C:\Program Files\Apache Group\Apache2\htdocs\test3.php on line 94

Warning: Cannot add header information - headers already sent by (output started at C:\Program Files\Apache Group\Apache2\htdocs\test3.php:2) in C:\Program Files\Apache Group\Apache2\htdocs\test3.php on line 95

I know I'm supposed to put the setcookies() function before any headers are sent but I can't really see where the problem lies in my code. Help would be appreciated..

Code for confirmation page : www.singnet.com.sg/~quake/confirm.php

Code holding functions for confirming user : www.singnet.com.sg/~quake/test3.php

[netizen]

<?php

$hidden_hash_var='your_password_here';

$LOGGED_IN=false;
//clear it out in case someone sets it in the URL or something
unset($LOGGED_IN);

/*

If you will notice their is a whitespace before your <?php tag. This will cause a single blank line to be returned, thus passing header information prior to setting the cookie.

[Pie]

I removed the empty line but am still getting the same message.. ....-_-

[Pie]

Ok finally solved the problem...I found some white spaces right at the bottom of page, after the ?> tag. After I removed them, no more warning messages.