Module development and code questions

Is there any way to specify a platform for a project download?

Hi,

I'm completely new to Drupal as you guys have one very cool module that other CMS's don't seem to have: a "Dean-Bat" Fundraising module.

EchoDitto has developed such a module called "echo_bat", and I really can't wait to use it... but I don't know much about installing modules in Drupal. I've looked at the standard Drupal howto, which unfortunately tells me that I need to follow any specific instructions provided with the module, but says no more. Of course, the one thing I'm now stuck on, is step 2:

2) Add SQL code to your database.

Hello,
I'm at the moment writing a module for durpal 5.1. This module contain a form with a 'textfield' (called 'size' in my case) which should accept only integer.
So I wrote this :

Is there anyway to log users off via the admin panel (or other ways) Without just putting the site in offline mode?

I was wandering if there was a way to display ads on the page for admins?

Ok so when normal users are logged on, they see the ads. And when I (the admin) am about to sign on, I see them. Soon as I log on, they disappear. I do not want that happening. Is there a way to display the ads for admin accounts as well?

Is there such a thing as a situations vacant or jobs available module?