MVC structural advice - separation of code

[eluser]Lyon[/eluser]
One more thing, I guess it falls into the same kind of category.

Say I am using object(classes) for my databases, like say I have a Project class that holds the name, description, etc...

Where would I create this class?

At the moment it is in a separate classes folder under applications and I am using require_once in the files that need it, however it is needed in the model, controller, and view files.

The class has absolutely no functionality and is just a preferred way of accessing the data over using arrays.

Where should classes like this be situated and how should they be included/loaded?

Thanks again.

BTW . I am getting the objects from the db queries using :

Code:

$previews = array();
while($preview = mysql_fetch_object($query->result_id, 'Project_preview'))
{
    array_push($previews, $preview);
}
return $previews;