changes to linux pearl script & shell scription

need help with changes to existing PERL scripts changes are simple. but here is what you need we have existing script which is used to post listings to ebay. but we need to make some changes to get it work 1. you need to understand ebay trading api to make this change. 2. experience with linux / perl script / shell scripting one of the changes we need is 1. add propay as payment method and remove paypal payment method in one of the api input/output fields 2. recompile the code and test and make it to work My budget for this work is $30