These dollar signs are hard coded on the index.php page. To get rid of them open up this page and go to line the following lines to replace them:
Are there any other areas where you are seeing the dollar sign instead of the currency you are using? I looked around a little and did not see any other areas myself. I know that there are some places that are not mentioned in the pdf document, I will forward this info so it can be added and if there are any other places I will note those as well.