Drupal 7.x

Is it possible to use a custom field in an argument?

What I'm trying to do is provide an argument and use this to match against the value of a custom field? I know I can match an argument against a taxonomy term, but I'm wanting to match against the custom field content instead rather than having to populate a taxonomy term or do I have to go the taxonomy route?

i just installed Drupal 7 and testing it out.
I have made Login block hidden in Structure/Block

now i am not able to login.

i get this errror if i go to http:///www.site.com/drupal7/?q=admin

Access denied : You are not authorized to access this page

how can i get the login page again?

Recently I have been using Wordpress to add simple CMS features to my sites but this doesn't offer the right type of editability that I need for my clients.

The latest site I am working on requires pages to have multiple editable areas on the page, Wordpress just gets messy.

Eg. Home Page = main content, side content, peripheral content area

I have been looking at converting to Drupal for a while and with version 7, it looks like I should be able to do this.

/* implementation of function intelligentsystem_menu(){
....
}*/

function intelligent_system_home_output(){
header('Content-type: text/plain; charset=UTF-8');
header('Content-Disposition: inline');
$content = intelligent_system_home_nameform();
return $content;

}

function intelligent_system_home_nameform(){

$form['title'] = array(
'#type' => 'fieldset',
'#title' => t('Enter the information :'),
);

$form['name'] = array(
'#type' => 'textfield',
'#title' => t('Name :'),
);

$form['submit'] = array(
'#type' => 'submit',

I have created a drupal site using drupal gardens to check out some modules and there is a Gallery Module installed but no version$ running on a D7 installation I cannot find it in the contirb mods is this not available for other users on real sites?

Gallery A flexible gallery of media.
Requires: List (enabled), Field (enabled), Field SQL storage (enabled), Options (enabled), Number (enabled)

my drupal site has 10 basic pages of which all can be seen by both anonymous user & authenticated users. The authenticated users can edit or post a comment but an ananymous user cannot.
i am currently working on drupal 7
i want my anonymous user should be able to see 6 out of 10 basic pages and authenticated users all