YOUR_CATALOG is normally the root of your site. If you look in the directory YOUR_CATALOG, it will probably start with the includes folder. What should be done is to upload all the YOUR_CATALOG files to the root of your store.
Next, if your admin is actually admin, you need to change it to something the script kiddies won't automatically try when "accessing" your site.
Create a viable name for your admin directory, rename the YOUR_ADMIN folder the same as your new admin and upload the files to your site.
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