Amazon Product Advertising API software

I need a smal program to search for the amazon products in different categories for keywords I input and that I can export to CSV or TXT. I can give you more details & model on how it looks like. Lastly, you have to give me the copyright to own the program because I don't want the script to be sold somewhere. It should work in windows XP, Vista and 7. I would write keyword and the program would return the results from amazon shop for a specific keyword. It should also sort and clean the results. If you did Amazon Product Advertising API before then you know what I am talking about. This is just a very simple program that costs about $50.