Module development and code questions

Hi,
I have a very stupid question, but I can't find anywhere the answer :)
I want to create a new object in my module like $user wich can be called from any module just when putting global $myobject; This variable must be declared once when user logs.
I am waiting for your help
Thanks
Amine

I am missing something here, but I am not sure what it is. The question is, how do I load a table into a selection box in a form. Here is what I have:

$form['tournament_add']['tourney_league'] = array(
'#type' => 'select',
'#title' => t('League Name'),
'#default_value' => variable_get('poker_leagues', array()),
'#options' => $select,
'#extra' => '',
'multiple' => 1 );

I just created a custom form with hook_form() for a custom node module I'm working on. My custom form includes Javascript that loads options in a second select form based on input from the first. This allows for subcategories which is nice for organization.

Problem is that I have to pass empty options to form.inc for the dynamic part of my form since they are filled in by the javascript.

I have a module I wrote for managing procedures on our site. It has an free-tagging category associated with it for keywords. I'd like to create a new block that shows all the specific free tags in a cloud that are associated with a specific node/id. It should show the editors entries, and (the part I'm stuck on) also provide a simple drop-box that registered users would see where they can add their own keywords. Those keywords don't need to generate new category pages - just need to appear on the page.

quicktags doesn't have option listed in "access permissions" page... is there a way to set it up so only authenticated users see the quicktags?

I messed with this but didn't have any luck.

<?php
global $user;
if(!$user->uid)
  return;
?> 

any clues?

I have to admit that I am a little lost on how to create a form then create a database record with the contents of the form. Hee is what I have created:

function poker_adminl() {
$form['league_add'] = array('#type' => 'fieldset', '#title' => t('Create a new poker league'));
$form['league_add']['league_name'] = array('#type' => 'textfield', '#title' => t('League Name'), '#maxlength' => 30 );
$form['league_add']['league_description'] = array('#type' => 'textfield', '#title' => t('Description'), '#maxlength' => 30 );