Installing Drupal

Hi,
I am trying to develop a site with a private groups where content can be developed, and then shared with the whole site when approved by the group leader. I have installed the og organic groups module, but I cannot see how to prevent group content being seen by others. Posts themselves are hidden, but the name of the group is shown which also means that a comment can be posted by a non member, but not viewed!

I would like the names of groups to be visible to site users so that they can subscribe to a group, but not visible to visitors without a username.

I have just signed up with a web hotel (http://www.clichehosting.com) to find that I cannot override the settings with .htaccess. I guess the most important setting there would be:
session.save_handler user

I have installed Drupal though and cannot see any problem with it. Why exactly is it required? Also I found somewhere that I can set the values in includes/conf.php like this:
ini_set("session.save_handler","user");

How do I install the .po translation file? There were no installaion instruction with the (Dutch) .po I downloaded.

The last few days I've been busy trying to find out how to fix this error, but I can't get it to work. I run the AppServ Open Project pre-installed server. And I never had any problems until now (too bad).

My configuration
- PHP 4.3.9
- Apache 1.3.33
- MySQL 4.1.7
- Zend Optimizer 2.5.5
- phpMyAdmin 2.6.0-pl2
- Perl 5.8.4
- Running on Windows XP as a testserver

When I go to inject the database.pgsql into phpPgAdmin I get this error.
I am using PostgreSQL 7.4.6.

Query Results

SQL error:
ERROR:  syntax error at or near ")" at character 32

In statement:
SELECT COUNT(*) AS total FROM () AS sub

No rows found.

logged in admin
copied it in modules dir
installed quotes modules from admin > modules
enabled all permissions for quotes from permission page

Still i see no quotes link ...
I also get the following Fatal error: Call to undefined function: filter_form() in /public_html/cms/modules/quotes.module on line 220

Can any1 figure out if i missed something
thanks