Module development and code questions

Ok.. since I got sick of overwriting my Snap Preview anywhere code in my template I created a quick module to impliment the previews.

If you dont know Snap Preview gives a nice site preview when users hover over an external link..

Here is the module.. you can get it from the CVS repository link.
http://drupal.org/project/snap

let me know your thoughts..

Does anybody know how to activate cache when throttle conditions are met?

Alright let me just start by saying I am very new to this. I installed Drupal not 2 hours ago. My intention was to use the flash gallery for my current website. So I followed the instructions and installed the image folder that had the image.module and image_gallery.module into the modules directory. Everything seems to work except when I go to Settings > Image or Settings > Image Gallery I just get "warning: Missing argument 2 for drupal_get_form() in site/includes/form.inc on line 61." And I'm just not exactly sure why it does that, so any suggestions would be much appreciated.

I am writing my first custom module for drupal 5.

my menu item looks like this:

        $items[] = array(
          'access'             => $access,
          'callback'           => 'drupal_get_form',
          'callback arguments' => 'vcsshop_delete',
          'path'               => 'admin/content/vcsshop/delete',
          'title'              => t('Delete catalog item'),
          'type'               => MENU_CALLBACK,
        );

the link you click on looks like: http://example.com/index.php?q=admin/content/vcsshop/delete/2

I get lots of errors and stuff when I click it. I tracked the problem to menu_execute_active_handler in menu.inc. The code:

  // We found one, and are allowed to execute it.
  $arguments = isset($menu['callbacks'][$path]['callback arguments']) ? $menu['callbacks'][$path]['callback arguments'] : array();
  $arg = substr($_GET['q'], strlen($path) + 1);
  if (strlen($arg)) {
    $arguments = array_merge($arguments, explode('/', $arg));
  }

$arguments is a string, not an array, so array_merge complains. I see in the php doc's that in php5 it was changed to require arrays. I changed the code to this:

  // We found one, and are allowed to execute it.
  $arguments = isset($menu['callbacks'][$path]['callback arguments']) ? Array($menu['callbacks'][$path]['callback arguments']) : array();

I was wondering if there is anyway to create a form or node that would display information entered into the form. However an authenticated user would be able to edit it without being given the ability to be an admin. I need to have this solved as soon as possible. I can provide you with more information.

I am developing a module to perform some action after user logs in to the system for the first time. I ran on quite strange problem. This is the code of hook_settings of my module: