New Fields in COOIS report

Hi,

In T-Code 'COOIS', I need to add input field of  'Posting date' , and one more thing is When user select 'Confirmation' from the list and execute , in the output ALV Report i need WBS, Material No. and Material Description for the Corresponding Prod. Order.

Is there any possibilities, we can do the change in the standard T-Code 'COOIS' Object.

Kindly Help me out..

Thanks and Regards,

Santha Kumar V