Module development and code questions

Okay - I've started to look at some changes for the sidebar.module. One of the things I would like to do is to be able to set a region in the sidebar content. This content is generated from function sidebar_panel() in the sidebar.module file.

I've tried calling some of the teme functions as well as the drupal_get_content function but no luck yet. I'm not 100% up on drupal so I don't know if I'm missing a step. I've set a new region in template.php and this works on the page.tpl.php.

I made StatCounter module for drupal 4.7. Please help me to review it. My project is at my homepage
http://www.supriyadisw.net/2006/06/statcounter-module-for-drupal.

How to submit my module to drupal.org?

Thank You so much and have a great day...

I am considering Organic Groups as an addition to my company's site, but have a question or two about its security structure first.
If I set up three groups in OG (Group1, Group2, and Group3), and have three users set up (User1, User2, and User3), can I set up specific users in each group to be able to administrate content _and_ other users in that group?
Example:

I add the buddylist ,but don't add other user into group. when i add other users will appear
'' warning: array_merge() [function.array-merge]: Argument #1 is not an array in /var/www/html/test/includes/menu.inc on line 415.
warning: Missing argument 1 for buddylist_addbuddy() in /var/www/html/test/modules/buddylist.module on line 713. "

How can i insert user varriable in user session? not in session table?

I would like to use the user badges module. Right now it's 4.6 only.

I'm thinking of trying to update it myself. I have some php books.

This is about the extent of my php knowledge:

I have taken example node module from API docs and made a new node type by doing global replaces on the 2 extra fields in the module, and putting in my own 2 types of fields.

If it's just a matter of replacing one type of code with another I can do that.