need billing document for a delivary

Hi experts,

i have a requirement where i need to get the delivaries by entering the shipment number on the selection screen.

After i get the delivaries, i need to get all the billing documents for the delivaries.

I am not able to get the link to get all the related details when a shipment number is enterd on the selection screen.

Pls guide me.

Points will be rewarded. Thanks in advance.