Adding Records

Hi

i need some solutions for this,

using this, field(name) from the customer table,field (description) from the item table and field(quntity) from the item ledger entry…how to show that particular company having that particular item descriptions with their quantity … if that particular company having more no.of quantity on the same description then how to add them and show it in single data value…

if anybody having an idea plz reply…advance thanx 4 answering…[H]

hey i cant get u???