I need a quoestion - answer module

hi guys,

im new to drupal forums and drupal at all so please move my topic if it's not in the right branch.

as i said im new to drupal and im looking for a Questions - Answer module like Yahoo!Answers etc. However, I want to be able to create some custom lines to have an asking form look like this:

1. Your name
2. Custom line1
3. Custom line2
4. Category
5.The question itself

Some rating features would be useful too. Any clues guys? Thanks in advance!