Ajuda com botao delete e banco de dados

Bom pessoal to aqui algumas horas desesperado querendo aplicar esse codigo aqui:

Agora o codigo php:

[code]<?php

session_start();

include_once( "Addons/TemplatePower.php" );

$tpl = new TemplatePower( "Template/index.tpl" );

$tpl->assignInclude( "menu", "Template/menu.tpl" );
$tpl->assignInclude( "header", "Template/header.tpl" );
$tpl->assignInclude( "blocks", "Template/blocks.tpl" );
$tpl->assignInclude( "news", "Template/news.tpl" );
$tpl->assignInclude( "footer", "Template/footer.tpl" );

$tpl->prepare();

include 'Site_Settings/Configuration.php';
include 'Addons/Classes.php';
include 'Addons/Globals.php';
include 'Addons/addons.php';

	//-----------------------------------------------------------------------//
	//--------------------------[ START reset send error ]-------------------//

	//-----------------------------------------------------------------------//
	//---------------------------[ END reset send error ]-------------------//
	
if( $User->LoggedIn == true )
{ 
	// fetch chars info
	mysql_select_db( $SiteSQL["config-database_db"] , $Site_sqlcon) or die( mysql_error() );
	$chars_info = mysql_query("SELECT a_index, a_user_index, a_nick, a_level, a_max_hp, a_str, a_dex, a_int, a_con, a_teach_complete, a_job, a_job2 FROM t_characters WHERE a_user_index = ". $User->ID ." AND a_deletedelay=0 ");

	// Update Cash table
	mysql_select_db( $SiteSQL["config-database_site"] , $Site_sqlcon) or die( mysql_error() );
	$result_cash = mysql_query("SELECT * FROM t_user_cash WHERE a_account_index = ". $User->ID ."");
	if(mysql_num_rows($result_cash) == 0) {
	// No Entry found, Adding 'cash 0' to login index
	mysql_query("INSERT INTO t_user_cash (a_account_index, a_cash) VALUES (". $User->ID .", '0')");
	}

       // COMEÇA AQUI O QUE EU QUERO FAZER               

	if( isset( $_GET['Do'] ) && $_GET['Do'] == 'resetar' )
	{
	$tpl->newBlock('a_nick');	
	mysql_select_db( $SiteSQL["config-database_db"] , $Site_sqlcon) or die( mysql_error() );	
	$update_admin = mysql_query("UPDATE t_characters SET a_wearing = 0 WHERE a_nick = '". Sanitize( $_POST['a_nick'] ) . "' AND a_account_index = ". $User->ID ." ");
	}

      // TERMINA AQUI    

	else {
	// Do Nothing
	}

	//-----------------------------------------------------------------------//
	//--------------------------[ START HOME ]-------------------------------//
	if( isset( $_GET['Do'] ) && $_GET['Do'] == 'account' )
	{

	$tpl->newBlock('userinfo');

	// Account Settings
	$tpl->Assign('UserID' , $account['user_code']);
	$tpl->Assign('Username' , htmlspecialchars( $account['user_id'] ));
	$tpl->newBlock('charinfo');

	if( mysql_num_rows( $chars_info ) == 0 )
	{
		$tpl->newBlock('nochars');
	}
	else
	{
		while( $row = mysql_fetch_array( $chars_info ) )
		{
			
			$Info = new Info();
			
			$Info->ClassJob( $row['a_job'] , $row['a_job2'] );
			
			$ClassImage = 'Template/Img/' . $Info->Class . ".gif";
		
			$tpl->newBlock('chars');
			$tpl->Assign('Icon' , $ClassImage);
			$tpl->Assign('Job' , $Info->Job );
			$tpl->Assign('charid' , $row['a_index'] );
			$tpl->Assign('Name' , htmlspecialchars( $row['a_nick'] ) );
			$tpl->Assign('Level' , $row['a_level'] );
			$tpl->Assign('maxhp' ,  htmlspecialchars( $row['a_max_hp'] ) );
			$tpl->Assign('str' ,  htmlspecialchars( $row['a_str'] ) );
			$tpl->Assign('dex' ,  htmlspecialchars( $row['a_dex'] ) );
			$tpl->Assign('int' ,  htmlspecialchars( $row['a_int'] ) );
			$tpl->Assign('con' ,  htmlspecialchars( $row['a_con'] ) );


		}
	}
	
	}
	//---------------------------[ END HOME ]--------------------------------//
	//-----------------------------------------------------------------------//

	//-----------------------------------------------------------------------//
	//--------------------------[ START Commands ]---------------------------//
	if( isset( $_GET['Do'] ) && $_GET['Do'] == 'commands' )
	{
	// List GM Commands
	$tpl->newBlock('GameCommands');
	}
	//---------------------------[ END Commands ]----------------------------//
	//-----------------------------------------------------------------------//

	//-----------------------------------------------------------------------//
	//--------------------------[ START NPC ID List ]------------------------//
	if( isset( $_GET['Do'] ) && $_GET['Do'] == 'npc_ids' )
	{
	// List NPC IDs
	$tpl->newBlock('npc_ids');
	}
	//---------------------------[ END NPC ID List ]-------------------------//
	//-----------------------------------------------------------------------//

	//-----------------------------------------------------------------------//
	//--------------------------[ START Item ID List ]-----------------------//
	if( isset( $_GET['Do'] ) && $_GET['Do'] == 'item_ids' )
	{
	// List NPC IDs
	$tpl->newBlock('item_ids');
	mysql_select_db( $SiteSQL["config-database_data"] , $Site_sqlcon) or die( mysql_error() );
	$item_ids = mysql_query("SELECT a_index, a_name, a_descr, a_level FROM t_item ORDER BY a_index DESC");
	while($item_ids1 = mysql_fetch_array( $item_ids )) 
	{
	$tpl->newBlock('item_ids_loop');
	$tpl->Assign('item_id' , $item_ids1['a_index'] );
	$tpl->Assign('item_name' , $item_ids1['a_name'] );
	$tpl->Assign('item_descr' , $item_ids1['a_descr'] );
	$tpl->Assign('item_level' , $item_ids1['a_level'] );
	}}
	//---------------------------[ END Item ID List ]------------------------//
	//-----------------------------------------------------------------------//
	
	//-----------------------------------------------------------------------//
	//--------------------------[ START News ]-------------------------------//
	if( isset( $_GET['Do'] ) && $_GET['Do'] == 'home' )
	{
	mysql_select_db( $SiteSQL["config-database_site"] , $Site_sqlcon) or die( mysql_error() );
	$news = mysql_query("SELECT * FROM t_latest_news ORDER BY a_index DESC LIMIT 5");

	if(mysql_num_rows($news) == 0) {
	// no news
	} else {
	while($news1 = mysql_fetch_array( $news )) 
	{
	$tpl->newBlock('news_loop');
	$tpl->Assign('news_title' , $news1['a_title'] );
	$tpl->Assign('news_poster' , $news1['a_user'] );
	$tpl->Assign('news_date' , $news1['a_date'] );
	$tpl->Assign('news' , $news1['a_news'] );
	$tpl->newBlock('news_buttons');
	
	mysql_select_db( $SiteSQL["config-database_site"] , $Site_sqlcon) or die( mysql_error() );	
	$admin_checker = mysql_query("SELECT a_admin FROM t_user_admin WHERE a_account_index = ". $User->ID ."");
	while($admin_checker1 = mysql_fetch_array( $admin_checker )) 
	{
	if($admin_checker1['a_admin'] == "10")
	{
	$tpl->newBlock('newsedit_buttons');
	$tpl->Assign('newsid' , $news1['a_index'] );
	}
	} //end admin
	}}}
	//---------------------------[ END News ]--------------------------------//
	//-----------------------------------------------------------------------//
			
} else {

	$tpl->newBlock('NotLoggedIn');
	$tpl->Assign('ServerName' , $config["ServerName"]);
	mysql_select_db( $SiteSQL["config-database_site"] , $Site_sqlcon) or die( mysql_error() );
	$news = mysql_query("SELECT * FROM t_latest_news ORDER BY a_index DESC LIMIT 5");
	if(mysql_num_rows($news) == 0) {
	
	} else {
	while($news1 = mysql_fetch_array( $news )) 
	{
	$tpl->newBlock('news_loop');
	$tpl->Assign('news_id' , $news1['a_index'] );
	$tpl->Assign('news_title' , $news1['a_title'] );
	$tpl->Assign('news_poster' , $news1['a_user'] );
	$tpl->Assign('news_date' , $news1['a_date'] );
	$tpl->Assign('news' , $news1['a_news'] );
	$tpl->newBlock('news_buttons');

	}
	}

}

$tpl->printToScreen();

?>[/code]

Entao eu quero zerar a coluna a_wearing da tabela t_characters que o WHERE do query vai depender do ID do usuario (a_user_index) e do personagem (a_nick)
e quando apertar no botao de resetar ele faiz o comando para resetar como citei acima mais nao consiguo…
tambem queria fazer com que quando fosse zerado essa coluna a pagina se recarrega com a mensagem “RESETADO COM SUCESSO” e caso o nome do personagem nao fosse da conta da pessoa aparece “ESSE PERSONAGEM NAO E SEU”

<tr> <td class="tu1">Problema ao logar a conta</td> <td class="tu2"><font color=red>* Se você está tentando logar e aparece Send Error - Click em Resetar <form method="post" action="index.php?Do=account">Nome do personagem: <input class="usuario" type="text" name="a_nick"> <input class="button3" type="submit" name="resetar" value="Resetar" /></form></font> </td> </tr>

bom vlw ai pessoal espero que me ajudem nao sei se expliquei certo

Cara, isso é um forum de java mas acho que tem alguns desenvolvedores php aqui, tente procurar em forum proprio para php que acho que sua duvida será tirada mais rapida.