Module development and code questions

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/.

It seems pretty easy from this vantage to write an calendar module expressly for users. That is, any event a user adds to the calendar is only viewable to the user who wrote the event. I don't see one, so I'm wondering if it's more difficult than I believe. Does anybody have an opinion about this?

Drupal 4.7.3
theme channel_nine dramatically modified (kept the 4 columns, though)

Is there anybody who could help me to resize my div #center box to , lets say height: 500px; width: 100%; and add a scroll bar only on this div #center box.

When i add this code to my css stylesheet, it resizes the body allright but all the data that would have made the box stretch down is being cropped off accordingly to the resize values.

i want to have a page like download page in drupal.org but i don't know what is this module. Anybody can so me what is this module and where i can download.
Manythanks