Development of TouchScreen POS/Accounting Application for my store.

Hi, I have a need to develop a touch screen application that essentially delivers following functionality. I am not looking for any fancy, high end POS system. Just basic minimum. An employee hour tracking system. Product Master Pricing and Promotions Reports Vendor Master This application needs to be in a client server environment. Meaning, I will have a server with database and thru a manual or batch process i will update daily transactions to the database. I am not looking for a very fancy high end system. Just basic minimum will do. Technology can be of your choice. But My preference would be opensource, to avoid any licensing costs. Intersted parties contact me at inquiry@coexsys.com. I have a very detailed design document of the project and I can share that.