how to create a new table processing data from other two

[#1]

Hello everybody:

I need helpwith script developing

I have atable that contains data from invoices and payment receipts related.

In othertable  I have the checks related witheach receipt.

I need to “create”a new table that apply  each check(partially or totally) to one or more invoices, using the aging as the orderingmethod (older check apply to older invoice)

I`m using  tables, like following:

Apply table:

IdApply

IdReceipt

IdInvoice

InvoiceDate

AppliedAmount (from receipt toinvoice)

Example:

IdApply	IdReceipt	IdInvoice	InvoiceDate	AppliedAmount
1	1	1	01/01/2012	500
2	1	2	01/02/2012	400
3	1	3	01/03/2012	300

Tabla de valores:

IdReceipt

IdCheck

CheckDate

CheckAmount

Example:

IdReceipt	IdCheck	CheckDate	CheckAmount
1	1	01/04/2012	200
1	2	01/05/2012	800
1	3	01/06/2012	200

As Result,  I need a table like this:

IdCheck	IdInvoice	AppliedAmount  (Check to invoice)
1	1	200
2	1	300
2	2	400
2	3	100
3	3	200

Really don’t know how to start.
Any I dea?

Thanks!!!