Overriding admin fields list value

[pearl_1234]

Hi to all,

 

I have created custom module which creating active Records from only one table.But one of the field in my table is "Status" which can have "0 or 1 or 2" value.I have creaded active Record but i want to show some thing else instead of showing 0 or ,1 or 2 like instead of 0 should be Error, 1, Success ,2 Shipped etc.

 

 

When i am using fields list like this it show the values from table fine but i want to change it in my code that if 0 in the record it should show Error and so on

 

 

 
 $this->fields_list = array(
            'fullfillment_id' => array('title' => $this->l('ID'), 'align' => 'center', 'width' => 25,'orderby' => true),
            'Status' => array('title' => $this->l('Status'),'filter_key' => 'status', 'align' => 'center'),
 

 

 

Secondly how i can disable Add new link from the active record so that no option to add new record 

 

 

Any help

 

thanks