custom pc page

i need to write a web page that would let a customer select components from a drop down menu with prices, have the total updated at the side or bottom, and then have a buy button at the bottom that would send me and email so that i could send them an invoice. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Complete ownership and distribution copyrights to all work purchased. ## Platform web site