Invoice Builder

I'm looking for a software written in VB.net which I want a database to store retails info(Address, Retail Name, number, and Telephone Number), the address of my business. So ill provide list of items with their prices and manually i should be able to add items and their price. I want VAT taxi based on VAT taxi rate in UK. Printing off invoice. list box to see items and their price. Add, Remove, Quantity + and - buttons. So it is a very small POS system. And Storing the invoices.