Hi,
The "Free" text is displayed generally only if there is no price for the product.
So in your case, I think that you have set a price in the "retail price" option and not in the "prices" part of the product edition page.
Please have a look at that, and if that's not the issue, please give us a link to a page with the issue.
Else you can still do a translation override on the key FREE_PRICE:
www.hikashop.com/support/faq.html#tran
