Looking for php freelancer to add a feature to a script by pleezan

I would like to modify following EAN to ASIN conversion script available opensource http://erwinmayer.com/2008/05/05/release-of-source-code-for-my-asin-to-ean-and-ean-to-asin-converter/ Currently… (Budget: $250-$750 USD, Jobs: MySQL, PHP)