how to create feed link in prestashop? please help

[joy_kev]

hi,

I need to create a feed link for my prestashop so I can get it listed in comparison site
this is their instruction:
http://www.askcost.com/help/content/3/7/en/create-prestashop-datafeed-script.html
#Step 1: Unzip and upload the file askcost_prestashop.php to your catalog directory
#Step 2: Join the merchant solutions center.
#Step 3: Set up the path to the datafeed file on the Merchant Product Listings Manage

I couldn't find catalog directory so I uploaded the file in the public folder and I validated but then how do I generate the feed link??

Thanks in advance