Very basic Inventory and Invoicing Application

I am looking for an application to be written in VB .NET that can use either SQL Express or Text Files.? Needs to be able to add inventory items with cost, retail price, quantity on hand, stocking level and minimum to have on hand.? Also need to be able to add customers and be able to set a price on all inventory items per customer if needed.? For example if customer A paid retail for a product and customer B paid $1 less than retail the application should ask if I want to save this price for this customer.? If I answer yes then that product should always come up $1 less for customer B only.? Need to be able to ring up an invoice quickly and print to printer, very basic invoice needs to be printed.? Would like to be able to run a report for items that are below minimum order levels for reordering, this report will tell? the number to order by using the minimum on hand and stocking level of the products, for example if I have a product that i say is minumum to have on hand of 3 and stocking level is 6 and I run the report and only have? 2 in stock the? report should show to order 4.? ? I also need a detailed report on the sales for that date.? Would be nice to print out detailed info for the day such as customer and an itemized item cost and item sell with profit for each customer sold that day. ## Deliverables Looking to have this completed as quickly as possible.