Help to Remove Language Flag

[isignafi]

Yes, I'm a newbie trying to setup ZenCart for the first time. Yes I've read through the FAQs as well as the forums and had no success in finding the identical issue. I'm using version 1.3.9h. with no add-ons.
My OS is Windows 7. My URL is www.iSIGnaFi.com, but, I haven't yet published to the internet. I have performed the 'basic checklist' configuration to the point of adding categories and setting up products in the categories; which is where I am now.
The issue I have is with the language icon that is shown several places when I preview a product I've put into a category. My language is, obviously, english but I'm a U.S. citizen and our flag is a bit different than the U.K. flag being shown on the product page. If I have any flag that is shown on my product pages, I want it to be a U.S. flag.
How do I either prevent that British flag from appearing and/or replace it with a U.S. flag?
Thanks, if you can help.