Opening Balance

Hello Friends

I have entered Opening Balance of cCustomers /Vendors as on 1.4.2007, but i want the segregation of bills of Individual Customers/Vendors. How to enter it?

Ex Mx X has a balance on 1.4.2007 Rs 10,000/= but this Rs 10,000/= may consists of various bill. How to do this segregation.

Thanks

Mogis