Installing Drupal

Hello I would like to know because when I download and install drupal 7

the default themes always come in the following path
public_html/modules/forum
and because it is
public_html/site/all/modules/forum,

but when I enter
mysite.com/#overlay=admin/modules/install
and put the url or upload the file is installed in
public_html/site/all/modules

What I suggest to use?

•Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to access public://default_images/Hydrangeas.jpg in file_save_upload() (line 1541 of /var/www/vhosts/ead-br.com/httpdocs/includes/file.inc).
•File upload error. Could not move uploaded file.
alguem com este problema? ja dei permissões php em safe mode
costa lobo

The installation documentation has been hacked. The contents list reads:

I'm trying to install Drupal on my new ASUS notebook, but the installation stops complaining about write permissions for settings.php I dont know whether it isnt compatible with it,did it happen to you? my notebook is this http://tinyurl.com/4yjncw2

This is my first time trying to install a production site (on Drupal stack local on my pc) to hosting server. Would appreciate if someone could help me get this straight in my head.

Not sure if I've hit the right forum but if not i'm sorry and if it can be moved to the right section please do so.

For now here's my problem.

I've been working on my website on my computer (localhost) and I wanted to test my website on my server so i've created a new database, user for that database and so on.. What I didn't realized is that my host automatically adds a prefixe to my user AND databases.

On my localhost the user/password and database where simple, root/root and test. Now I want a bit more security online so i've created a real user/password and named the database correctly but it's really different from the original one : prefixe_user/(password) and prefixe_databasename.

I've uploaded all the files onto my server and when I go to the mainpage http://server.com/folder/ I get this :

PDOException: SQLSTATE[28000] [1045] Access denied for user 'prefixe_user'@'localhost' (using password: YES) in drupal_get_installed_schema_version() (line 150 of /home/USER/public_html/FOLDERNAME/includes/install.inc).

I've changed the info in the /sites/default/settings.php to reflect the new database/username/password

$databases = array (
'default' =>
array (
'default' =>
array (
'database' => 'prefixe_databasename',
'username' => 'prefixe_user',
'password' => 'MYPASSWORD',