Installing Drupal

Hello,
I am new in Drupal.
I have a few domain on Register365. One day all of the Drupal sites stopped working with error code 404.
Two domain on Apache server.

I had the following error message:

I tried upgrade modul Data iCal to version 7.x-2.9 and I received information that I need PHP 5.3 ( I have 5.2.x) . I would like uninstall this module. I can't do it like admin. Next to name/icon of Data iCal is red cross.
How can I do it manually ?

Hi everyboy! I hope someone can help me on this error as I have tried all the possible solutions but none works. I get this error randomly. Most of the solutions suggest to uncomment a Rewrite line on the .htaccess, but it does not work. This is my .htaccess code (it has changed from the original to add Boost module - the error already appeared before installing Boost). Can anybody take a look? I willl really appreciate as I am much far from an expert on this.

#
# Apache/PHP/Drupal settings:
#

# Protect files and directories from prying eyes.

Order allow,deny

# Don't show directory listings for URLs which map to a directory.
Options -Indexes

# Follow symbolic links in this directory.
Options +FollowSymLinks

# Make Drupal handle any 404 errors.
ErrorDocument 404 /index.php

# Set the default handler.
DirectoryIndex index.php index.html index.htm

# Override PHP settings that cannot be changed at runtime. See
# sites/default/default.settings.php and drupal_environment_initialize() in
# includes/bootstrap.inc for settings that can be changed at runtime.

# PHP 5, Apache 1 and 2.

I uninstalled drupal and reinstalled this morning. I then installed a couple of modules and a couple of themes, but when I set this one as my default theme, the site went down.

https://drupal.org/project/tb_neris

This is what the site looks like now...

http://xxxparadisestrippers.com

Sirs,

I really want to believe that a DRUPAL package will do everything I need to achieve. Please put my mind at rest by giving me feedback on the following:

1) I want my home page to carry banner adverts that interactively change say every 5/10 seconds.
2) I want the package to be able to interact with an invoicing facility for those adverts and for static adverts.
3) I want to be able to edit/change those adverts at will as an overall administrator .
4) I want all pages to contain my Logo at a top of the page position.
5) I want to include an interactive MAP on the main home page and by placing flags or pins on that map to identify sub domains and by clicking on a flag/pin the user will be taken to a sub domain that is either an external link or a sub domain within the software/web site.
6) I want to set up individual usernames/passwords to protect each sub domain so that each individual sub domain can be accessed only by it's authorised moderator.
7) I want to maintain overall administrator access to all subdomains.
8) I want to be able to set up each sub domain with its own Home page header.
9) I want to access say 30 individual sub domain specific pages directly via the sub domain Home page.
10) I want to make the Main Home page and the sub domains accessable as apps for both Android and Apple phones and tablets.

Im installing Drupal from scratch, on a Debian server. I am getting these error messages:

PHP extensions Disabled
Drupal requires you to enable the PHP extensions in the following list (see the system requirements page for more information):
gd
pdo
Error
Database support Disabled
Your web server does not appear to support PDO (PHP Data Objects). Ask your hosting provider if they support the native PDO extension. See the system requirements page for more information.

I tried the following, with no luck:
sudo apt-get install libapache2-mod-auth-mysql php5-mysql phpmyadmin

php_info says:

Additional .ini files parsed
/etc/php5/apache2/conf.d/gd.ini, /etc/php5/apache2/conf.d/mcrypt.ini, /etc/php5/apache2/conf.d/mysql.ini, /etc/php5/apache2/conf.d/mysqli.ini, /etc/php5/apache2/conf.d/pdo.ini, /etc/php5/apache2/conf.d/pdo_mysql.ini, /etc/php5/apache2/conf.d/suhosin.ini

It seems lige GD is installed:

php -i | grep -i --color gd
Additional .ini files parsed => /etc/php5/cli/conf.d/gd.ini,
gd
GD Support => enabled
GD Version => 2.0
gd.jpeg_ignore_warning => 0 => 0

I tried putting a php.info in the drupal root folder:
memory_limit = "128M"
register_globals = Off
extension="pdo.so"
extension="pdo_mysql.so"
upload_max_filesize = 10M
post_max_size =64M
memory_limit = 64M