Module development and code questions

As a user authorizes with my site (www.mysite.com), in parallel and under-the-covers, I'd also like to authorize the same user with my Drupal installation (community.mysite.com).

I've created a CGI script which uses the libXMLRPC library from Dan Libby. It makes a HTTP POST call to http://www.mysite.com/xmlrpc.php script such as:

In this post http://drupal.org/node/29273#comment-129201
I used the script to get captcha working for the guestbook module. Well it works fine, the only problem I have is that if I open the guestbook, the error message "The answer you entered to the math problem is incorrect." without having entered anything yet or even clicked on the send button? What I want is that after clicking the send button, the error message just appears if somebody did it false or didn´t type in anything. Can someone help?

I am unable to find out definition of call_user_func_array($menu['callbacks'][$path]['callback'], $arguments);

Please help me where i can find def. of this function.

Hey there,

I want to create a new node type where users can select among other nodes (by selecting the nodes by taxonomy I suppose) and combine these small nodes together to create a new node that is a combination of the other nodes.

Is there module out there that does this already? Or should I start from scratch?

Dave

hi,
How to customise Event module. ? I would like to add more fields to event? In which module I want to modify? Say an additional Text box in Submit Event page?

sjk

Hi
How I can generate pdf file (i have installed pdfview module)?
I have taxonomy:
##########################
Car
--Motor
--bla-bla-bla
--bla-bla-bla
--bla-bla-bla
--Enghine
--bla-bla-bla
--bla-bla-bla
--bla-bla-bla
--bla-bla-bla
--somting else
--bla-bla-bla
....
###########################
and how can I generate only ONE pdf file, for example if I stand on file Motor/bla-bla-bla/bla-bla-bla/somting else