Module development and code questions

I am trying to put together a reporting tool which will include dynamically generated graphs.

Can anyone tell me what to include in my graph script to get the Drupal environment (db, user etc)?

thanks

Is there any way to override the rendering function not of the whole for
but only a certain element.

e.g. override
function theme_radios($element) {
}
from form.inc

with my own function
function theme_myform_radios($element) {
/*
my code here; e.g. to display all radios in one single row instead of
one row for each radio

*/
}

Is there any way to do so?

Hi friends,
How can I show the photo of user who has logged in as block? Can anybody please help me with this?

Thanks in advance.

Hi all:

Can anybody suggest me how to submit a patch in drupal project???
My module is already listed their and i need to submit its patch.

Hi,

How to create module in drupal and how to enable that module.how to create files in
module.

Regards,

altoo