Module development and code questions

Hello,

I've been reading a lot through the forum, but never finding the right answer. It seems that I'm definitely not the only one in search for a working solution to having a social-network website that also host users' websites and Group websites.

1) How to make each user and each group have their own subdomains??? (username.domain.com and groupname.domain.com created automatically after registration ... like in Wordpress)

i hv a captcha module in drupal 4.7

my problem is every time any want to comment in my blog and answer the math question in right way ,captcha return with error tht the answer is wrong ,and it's funny cause some vistor asked 4 the result of 2+3 and they type 5 and captcha said it's wrong answer????
so my problem now is no one can comment in my blog:(:(.

I recently switched to a fixed width drupal theme, and because my images are all way bigger than the tiny frame they're loading in with the Gallery module, I would like to alter it so instead of loading inside the drupal theme it would open up just in gallery2.

Current Example:
http://www.mysite.com/index.php?q=gallery&g2_itemId=1213

As the title says, I'd like to change the way node authors are displayed to better integrate with the Nodeprofile module. First, I want the displayed author text to be the title field of the user's Nodeprofile page, instead of the username (in this case I am using the standard Title field as a "real name" field, no CCK involved). Second, I'd like this text to link to the Nodeprofile page of the user, instead of Drupal's built-in user page.

I need to display nodes that a given user (via user id argument) was commented on. You can see this for example in digg.com when you display someone's page and it has news that the user submitted and commented on.

I have buddylist module installed and it provide the views to list nodes created by buddies of current user (logged in user) but I want to have a views to list nodes created by buddies of a given user id (via argument). How to do this?