I have been trying to change this and it is not showing after hitting save. Instead of showing how many comments at the end of each post, I want it to show: Post a comment. I've had many people ask me by email where they are supposed to post.

Now, I know this should be simple - I'm on medication for strep throat - that's my excuse.

Beautiful Theme!

What version of Atahualpa?
How and where are you trying to change it in the theme?

This is done on the ATO->Post/Page styling->FOOTER: xxxxx
note that there are multiple FOOTER: locations (Homepage, Multi Post Pages etc)
also be sure to read the description for '%comment' near the top of the page so you understand how to use it.