[support] ticket tracking system in drupal?

[Simone Dal Maso]

Hi,
I'd like to have a simple ticket tracking system module for drupal, for 
example, a person open a ticket, this ticket can have various states 
(opened, solved, posponed etc) and people can give solutions and so on.
I know there is the great project module with issues, that is also in 
drupal.org, but this module is especially for developers, cvs, etc.Is there 
some generic module that make a ticket system?
thank you.
for drupal6.