Hello. First, set the default currency in the settings to your currency. However, there are still some places where the $ will be included.
In the language file, there will be some occurences of $. Search through the english.dtregister.php language file and find the $ and change them along with any other text changes you need to make.
If there are any other $ signs showing outside of the language file changes, search the dtregister.php file to find and replace them. Thanks.