linking a sales receipt worksheet to an inventory worksheet
 

I have a sales receipt worksheet that has all my sales items on it. I also
have an inventory worksheet. I would like when I make a sale that it
automatically is deducted from my inventory worksheet. I have Office 2003
Example: Sales receipt is (sheet 4)
In each column
Item#-Description-Item Cost-Qty-Cost
Example: Inventory is (sheet 5)
In each column
Item#-Description-Cost- Qty Rec'd-Sold-In Stock