I have several HTML and video files uploaded in a subdirectory of a website I'm working on. The website is not currently using Drupal. If I were to install Drupal 7, would the HTML files and videos still work? I tried using WordPress, and when WordPress was running, whenever I navigated to any of those files it would give me a 404 error. How will Drupal handle these files?

Hi Guys, Brand new to MAMP & Drupal and cant get enough, just spend the last 10 hours messing around with it adding modules, looking up tutorials and is AWESOME, I just finish an HTML course and when someone mention Drupal in class it got me started, im just basically looking for a hobby.
So I Started working on a little project.

1-I need to create a form with text/radio/drop down menus, all that good stuff. This form needs to be able to retrieve information from a database im working on as well (ex: if im looking for user Dan Smith, Phone: 999 999 9999, New york, NY WITH a designated ID NY 99999) after clicking a submit button.
-I want to be able to Pull Dan Smith's info by entering his Name or Phone# or City or State or with the Designated ID # and a submit button to get the info.
2-Once the information is retrieve a second page will come up with all this information Plus a Text field box, where i could enter more information regarding an order or question that he might ask regarding a product. (just like the box field where im typing in now) this Page #2 would also need a submit button, where all the info would get store and is able to be retrieve on to a
-3rd page which can be edited by other users, and would have a forum or a small chat room where any1 can type info about his order, or question.

My client (my best mate...) needs to enter values for a Medication and the Dosage, and do this multiple times for each patient (patients can have many medications).

As an analogy I want kind of what an image field can do when it has ALT and Title attributes enabled - it has a primary form item (the upload widget) and two text fields - I need two select lists and the whole thing (a field) to me multi-value (unlimited).

Does anyone know of a module that provides this sort of feature, or should I just guts it out and build my own field module?

I am trying to install a new Drupal 7.
I get the errors

PHP extensions Disabled
Drupal requires you to enable the PHP extensions in the following list (see the system requirements page for more information):
* 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.

How Can I theme Content By Node Type. In Drupal 6 it was as easy as creating node-page.tpl.php and put it in the theme folder. But it does not work in Drupal 7?

Submission Info could Hided in setting page of admin/build/themes, but there is no option for hiding Submission Info (Author, Date) in Drupal 7.

Where is this option?