Amazon API Bulk Lookup

I want a simple to use program that will use the Amazon API to lookup a list of UPC codes and return valid ASIN numbers. The valid ASIN numbers is the only The returned information should be formatted with the returned ASIN in one column, the UPC used to lookup the information in the second column. For UPCs that return multiple ASIN numbers, each ASIN number will need to be on a seperate row with the original UPC used to lookup the ASIN next to it. The program must be capable of handling 25,000 UPCs minimum, with 50,000 for each file desired.