Which file do I have to edit to change the description text for the newsletter subscription box?
Your question is a little short on context, but in a standard Magento installation, the newsletter
phtml template is located at
which means it will be located at
if your theme conforms to the Magento standard. For example, the
default theme (part of the
default design package) have the following files.
However, your screen shot indicates you're using a custom theme, which means all bets are off.