get ntework number and WBS number for given agreement number

hello all,

we have an ALV requirement

where i need to get Agreement wise (ME33k) wise PO's, PO items, network number and WBS number....

i could get the PO's and PO items by passing agreement number to KONNR field in EKPO,

now how do i get the corresponding network number and WBS number...(knowing PO, PO item)...

thanks in advance...