Updates to billing.phtml not showing

Question

Can't seem to figure out how to remove the following fields from the Billing step:

1) Register with us for future convenience
2) Ship to this address
3) Ship to different address

I am trying to change the billing.phtml to comment out the fields not needed but having no luck on the front-end. Even after clearing cache, reindex etc... nothing is changed.

So far I have tried to modify the billing.phtml files in the following locations:

design/frontend/rwd/default/template/persistent/checkout/billing.phtml
design/frontend/base/default/template/checkout/onepage/billing.phtml
design/frontend/base/default/template/persistent/onepage/billing.phtml

Where can I edit the billing page so I can remove unneeded fields?

Answer 1

Turns out one of the extensions I installed was overwriting my billing.phtml file

I was using this extension to skip the first step on the checkout process: https://www.magentocommerce.com/magento-connect/skip-checkout-step-1.html

I had to edit the billing.phtml file located at template/skipstep1/billing.phtml

Hope this helps someone.