Installing Drupal

Having searched drupal.org I haven't found a solution to this problem - or one that i understand anyway ;-( ... newbie to drupal ...

I'm running Drupal 4.6.1 in OS X 10.4.1 (Tiger - localhost - Apache)

I have several directories which state:

The directory files is not writable.
or
The directory files/pictures is not writable.

I have try to install flatforum, but i get following error:

warning: array_merge() [function.array-merge]: Argument #2 is not an array in themes\engines\phptemplate\phptemplate.engine on line 42

Any ideas?

Thank you...

i followed the install steps but the event mod is not showing up in the "access control" menu nor do i see the options to add a node for this type. I dont know where to start to solve the problem...

So I've decided for Drupal for the CMS of my domains. I'm not new to CMS', PHP, or Mysql -- however I'm in a bind right now. My current host has a 1 Mysql database constraint and I want to run 3 domains off of one Drupal installation. I'd like to share everything under one userbase (like logins, profiles) except only the site content differs between the three. I believe I've set it up right, but it's not working right now. Here's what I did:

1. Configured /settings/default/settings.php to reflect the single Mysql DB it connects to and the base url.
2. Configured /settings/subdomain.domain.net/settings.phpto reflect the single Mysql DB it connects to and the base url.
3. Configured /settings/newdomain.net/settings.php to reflect the single Mysql DB it connects to and the base url.

After researching how to split up a data base to share tables and separate tables, located here, I followed the link in the discussion at the very bottom where someone made a PHP script to setup the tables based upon your site layout, located here. I placed that PHP script in /database/config.php as directed and pointed my browser to http://maindomain.net/database/create.php?dbms=mysql ... Once completed it reported that it properly setup the tables. I thought everything was okay so I continued with my installation by logging in and begining to configure my separate sites. Soon I realized, or it seems that, it did not work. My separate domains all soon used the same site title.

ok - I'm the hosting guy - I didn't set this up, but trying to figure out what happened for one of my hosting customers.

I was running Fedora Core 3 and everything was fine. I upgraded to Fedora Core 4 and now it's broken.

I had already upgraded to MySQL 4 before the FC4 upgrade. and it was working. However the MySQL 4 install wasn't pretty and that's why I did the FC4 upgrade to do it right.

Whe I run -> php index.php from the command line I get:

I want to use drupal as my website,but I like phpbb(www.phpbb.com) rather than forum of drupal.
After I use phpbb as my forum,I need add his/her information to user data table of drupal system and phpbb system if a new user registers,and it'll save well.
Now I have a difficulty.If the register user logs on,how do I update session to show register user interface on drupal system and phpbb system?
Thanks.