Module development and code questions

I'm in a situation where I'm using drupal for an Intranet site in which different users are coming from 4 different IP addresses. I need to be able to assign an 'internal user' role based upon these users coming from these addresses. Any other address will have to first log in for validation.

Does anyone know of a module that does something like this? If not, what hooks would I need to use to program my own module?

I had a hack in the user.module, but that is not too kosher...

Hi to all,

I would like my audio player to oped external podcast...
any module that does it?

Hello everyone:

I used to assist CCK a contemplate module, how let it in the home pagedemonstrate I joined voting module (nodevote)? How does the codewrite?

Hi

I had a look around the Handbooks and forums but I couldn't see an aswer to this.

Is it better to have a separate module for each node type in a "package" or should they all be done in the same module.

Eg if I was doing a custom module for this sort of structure
Shop_chain
-----------
id
name

Shop
-----------
id
shop_chain_id
name
address

Staff
------------
id
name
shop_id

etc

Could someone help me out with the survey module? I have uploaded the files, run the SQL code (both by hand in phpmyadmin, and via the install files) for the survey module and the forms module, and set access control correctly, but I can not get it to work. The Survey link is in the Create Content sub-menu, but not in the Create Content page. I have seen the comments here: http://drupal.org/node/59710 Same problem, but the fix didn't work for me. Any ideas?? Thanks in advance for any replies.

Hi. Anybody working on this?

http://www.google.com/ig/directory?synd=open/.