Module development and code questions

Hi, i'm new to drupal. I searched around a bit and haven't yet found what i want.
Basicly I want to validate every submit that happens on the site. I want to check everything sent to the database and change it if necesary.
How should i go about building this module.
Thanks.

//////////////////////////////////////////////////
exam.info
//////////////////////////////////////////////////
; $Id: exam.info ,v-1.0 2007/02/15 dries Exp $
name = Example
description = This is Example module.
package = Core - options
version = VERSION

version = "1.0"
project = "exam"

///////////////////////////////////////////////////
exam.module
//////////////////////////////////////////////////
<?php
// $Id: exam.module , v-1.0 2007/02/15 Exp $

/**
* @ file
* This is file module exam
*/

/**
* Implementation of hook_help()
*/
function exam_help($section) {

return $output;
}

/**
* Implementation of hook_perm()
*/
function exam_perm() {
return array('exam admin access', 'exam user access');
}

/**
* Implementation of hook_menu()
*/
function exam_menu() {
$items = NULL;
$access_admin = user_access('route admin access');

$items[] = array(
'path' => 'admin/telecom/exam',
'title' => t('exam'),
'description' => t("View, edit, and delete your site's exam"),
'callback' => 'drupal_get_form',
'callback arguments' => array('exam_admin_edit'),
'access' => $access_admin,
);

$items[] = array(
'path' => 'admin/telecom/exam/list',
'title' => t('List exam'),
'description' => t("View, edit, and delete your site's exam"),
'callback' => 'drupal_get_form',

Hello
Having gone thought the basic steps for creating a custom block & and node type modules, i guess i am ready to take the next step.
How to edit the functionalities of existing modules.

In my case i am looking at the book module.
What i want to do is quiet straight forward.(No way simple!!)

The book module prepares a book and lists out pages, Having ,

Hi,

i have created a tab on my page via MENU_LOCAL_TASK, but how could i make this tab visable on primary menu?

thx for tips!

i hv used vbulletin, i hv configured it completely, works.

i want to access it from drupal site, for that i have used the drupalvb module as specified.
but while i login to drupal and use the forum from the link

"Logging into the website gives you access to Forums as well."

site is redirect to the forum, but ihave to again login there, so please provide the information that why the common login is not working, or is there patch, or misconfiguration.

i want single login, that give access to both drupal and vbulletin

thank you
drupal devloper

Hello Everyone,

Has anyone come across a music lyrics module that works well for drupal 4.7? I am working on a music community website and this module would come in very handy as one of the features.

Thanks,

CK.

Afrovibe - African Music - Audio, Video
http://www.afrovibe.com