Computer Creation Software

I need a small program that will allow me to design computer systems. I need this program to allow me to add, remove, and modify computer components, and hold the name, small information, and the price of that part. After I select all parts, I will then need the program to add up all the prices and give me a total cost. I would also like the program to allow me to print out invoices for the final computers that are designed. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Windows XP