Help on table control

Hi,

I cretaed my own Z table and i ve to insert new records as well update them when necessary..

now i ve a table control for that..so how i can insert and update my ztable with table control..?

In PBO and PAI. what should i mention in Loop at ........?

Normally it allows only Itab which contains Ztable data. But here itab is empty. since i am not populating itab from Ztable,

I need to populate the Ztable from Table ctrl datas.

Is there any parameter which holds the number of rows entered in table Ctrl?

help me in this regard.